High-resolution Geophysical Mapping of Submarine Glacial Landforms

Size: px
Start display at page:

Download "High-resolution Geophysical Mapping of Submarine Glacial Landforms"

Transcription

1 High-resolution Geophysical Mapping of Submarine Glacial Landforms M. Jakobsson 1, J.A. Dowdeswell 2, M. Canals 3, B.J. Todd 4, E.K. Dowdeswell 2, K.A. Hogan 5 L.A. Mayer 6 1 Stockholm University, Sweden (martin.jakobsson@geo.su.se) 2 Scott Polar Research Institute, University of Cambridge, UK (jd16@cam.ac.uk) 3 CRG Marine Geosciences, University of Barcelona, Spain (miquelcanals@ub.edu) 4 Geological Survey of Canada, Dartmouth, Nova Scotia, Canada (Brian.Todd@NRCan.gc.ca) 5 British Antarctic Survey, Cambridge, UK (kelgan@bas.ac.uk) 6 Center for Coastal and Ocean Mapping, University of New Hampshire, USA

2 Poster OS31A

3 High-resolution Geophysical Mapping of Submarine Glacial Landforms Glacial landforms are generated from the activity of glaciers and display spatial dimensions ranging from below one meter up to tens of kilometers This presentation illustrates how the evolution of marine geophysical mapping techniques made it possible to study submarine glacial landforms in detail Three examples illustrating what higher resolution seafloor mapping revealed Bolin Centre for Climate Research A collaboration between Stockholm University, KTH and the Swedish Meteorological and Hydrological Institute

4 Spatial dimensions: from meters to kilometers Tens of meters - meters Image from: DOWDESWELL, J. A., DOWDESWELL, E. K., RODRIGO, C. & J. DIAZ. Assemblage of glacial and related landforms in the fjords of southern Chile (890) Bolin Centre for Climate Research A collaboration between Stockholm University, KTH and the Swedish Meteorological and Hydrological Institute

5 From single beam to multibeam Bolin Centre for Climate Research A collaboration between Stockholm University, KTH and the Swedish Meteorological and Hydrological Institute

6 Example 1: Norwegian Channel C D Bathymetric profiles Norwegian Channel Seismic reflection profile Sellevoll, M.A., Sundvor, E., The Origin of the Norwegian Channel A Discussion based on Seismic Measurements. Canadian Journal of Earth Sciences 11,

7 Shade relief from grid with cell-size 50 m Mapped with Simrad s first multibeam EM100, 95 khz Ottesen, D., Dowdeswell, J.A., Rise, L., Submarine landforms and the reconstruction of fast-flowing ice streams within a large Quaternary ice sheet: The 2500-km-long Norwegian-Svalbard margin (57 80 N). Geological Society of America Bulletin 117,

8 The first(?) multibeam mapping of MSGLs Simrad EM12S, 12 khz Canals, M., Urgeles, R., Calafat, A.M., Deep sea-floor evidence of past ice streams off the Antarctic Peninsula. Geology 28, Bolin Centre for Climate Research A collaboration between Stockholm University, KTH and the Swedish Meteorological and Hydrological Institute

9 Example 2: Pine Island Bay Jakobsson, M., Anderson, J. et al., Geological record of Ice Shelf Breakup and Grounding Line Retreat, Pine Island Bay, West Antarctica. Geology 39,

10 From wide to narrower foot print Oden multibeam EM 122, 12 khz, 1 x 1 IB Oden multibeam Kongsberg EM 122, 12 khz, 1 x1 IB Oden chirp sonar SBP 120, 2-7 khz, 3 x m Foot print, depending on beam width and depth Multibeam was financed by: Knut & Alice Wallenberg Foundation Swedish Research Council Swedish Maritime Administration

11 Pine Island Trough: grid-cell size 50 m 1 km Bolin Centre for Climate Research A collaboration between Stockholm University, KTH and the Swedish Meteorological and Hydrological Institute

12 Pine Island Trough: grid-cell size 30 m 1 km Grid-cell size 20 m Bolin Centre for Climate Research A collaboration between Stockholm University, KTH and the Swedish Meteorological and Hydrological Institute

13 Analyzed ridge height variation along bathymetric profile Jakobsson, M., Anderson, J.B., et al., Geological record of Ice Shelf Breakup and Grounding Line Retreat, Pine Island Bay, West Antarctica. Geology 39,

14 Getting closer to the seabed with higher resolution system Deep water Shallow water Bolin Centre for Climate Research A collaboration between Stockholm University, KTH and the Swedish Meteorological and Hydrological Institute

15 Example 3: Enigmatic ridges in Lake Vättern, Sweden Atlas contribution: GREENWOOD, S. L. & M. JAKOBSSON. Enigmatic ridges in Lake Vättern, Sweden (857) EM2040, 300 khz, grid-cell size 1 m. Enigmatic ridges Possible explanations i) Small moraine segments, formed at/near the grounding line ii) The matchsticks are formed from basal crevasse infill Bolin Centre for Climate Research A collaboration between Stockholm University, KTH and the Swedish Meteorological and Hydrological Institute

16 Ice flow Typical nose Possible explanations i) Small moraine segments, formed at/near the grounding line ii) The matchsticks are formed from basal crevasse infill

17 New global grid at 30 x 30 arc second resolution: GEBCO_2014 See poster: OS31B-0990 General Bathymetric Chart of the Oceans (GEBCO) Mapping the Global Seafloor

Figure 3.1: Illustration showing the bathymetry s role for the tsunami propagation following the earth quake 26 December 2004 outside of Sumatra.

Figure 3.1: Illustration showing the bathymetry s role for the tsunami propagation following the earth quake 26 December 2004 outside of Sumatra. Figure 3.1: Illustration showing the bathymetry s role for the tsunami propagation following the earth quake 26 December 2004 outside of Sumatra. The left globe shows the seafloor bathymetry as portrayed

More information

Figure 3.1: Illustration showing the bathymetry s role for the tsunami propagation following the earth quake 26 December 2004 outside of Sumatra.

Figure 3.1: Illustration showing the bathymetry s role for the tsunami propagation following the earth quake 26 December 2004 outside of Sumatra. Figure 3.1: Illustration showing the bathymetry s role for the tsunami propagation following the earth quake 26 December 2004 outside of Sumatra. The left globe shows the seafloor bathymetry as portrayed

More information

Geological record of Ice Stream Collapse, Pine Island Bay, West Antarctica

Geological record of Ice Stream Collapse, Pine Island Bay, West Antarctica GSA DATA REPOSITORY 2011212 Jakobsson et al. Geological record of Ice Stream Collapse, Pine Island Bay, West Antarctica Figure DR1. The corrugated furrows in central Pine Island Bay Trough and the iceberg

More information

UNDERSEA FEATURE NAME PROPOSAL (Sea NOTE overleaf)

UNDERSEA FEATURE NAME PROPOSAL (Sea NOTE overleaf) INTERNATIONAL HYDROGRAPHIC ORGANIZATION INTERGOVERNMENTAL OCEANOGRAPHIC COMMISSION (of UNESCO) UNDERSEA FEATURE NAME PROPOSAL (Sea NOTE overleaf) Note: The boxes will expand as you fill the form. Name

More information

Deglacial landform assemblage records fast ice-flow and retreat, Inner Hebrides, Scotland

Deglacial landform assemblage records fast ice-flow and retreat, Inner Hebrides, Scotland Deglacial landform assemblage records fast ice-flow and retreat, Inner Hebrides, Scotland D. DOVE 1*, A. FINLAYSON 1, T., BRADWELL 1,2, J. A. HOWE 3 & R. AROSIO 3 1 British Geological Survey, Murchison

More information

Seafloor Mapping in the High Arctic: The Challenges and the Joys

Seafloor Mapping in the High Arctic: The Challenges and the Joys Seafloor Mapping in the High Arctic: The Challenges and the Joys Larry Mayer Center for Coastal and Ocean Mapping / NOAA- UNH Joint Hydrographic Center University of New Hampshire, USA Martin Jakobsson

More information

General Bathymetric Chart of the Oceans

General Bathymetric Chart of the Oceans General Bathymetric Chart of the Oceans GEBCO A look at the world from an ocean s perspective On behalf of GEBCO: Boris Dorschel 1, Martin Jakobsson 2 1 Department of Geophysics, Alfred Wegener Institute

More information

MARINE GEOLOGY & GEOGRAPHY

MARINE GEOLOGY & GEOGRAPHY MARINE GEOLOGY & GEOGRAPHY Bathymetry BATHYMETRY BATHYMETRY THE UNDERWATER EQUIVALENT TO TOPOGRAPHY THE STUDY OF WATER DEPTH A BATHYMETRIC MAP SHOWS FLOOR RELIEF OR TERRAIN AS CONTOUR LINES Bathymetry

More information

Dynamics of surging tidewater glaciers in Tempelfjorden Spitsbergen

Dynamics of surging tidewater glaciers in Tempelfjorden Spitsbergen Department of Physical Geography and Quaternary Geology Dynamics of surging tidewater glaciers in Tempelfjorden Spitsbergen Anne Flink Master s thesis Physical Geography and Quaternary Geology, 60 Credits

More information

The Continental Shelf Project: An overview of research activities in the Arctic Ocean on behalf of the Kingdom of Denmark

The Continental Shelf Project: An overview of research activities in the Arctic Ocean on behalf of the Kingdom of Denmark The Continental Shelf Project: An overview of research activities in the Arctic Ocean on behalf of the Kingdom of Denmark Geological Survey of Denmark and Greenland Ministry of Climate and Energy John

More information

Supplementary Fig. 1. Locations of thinning transects and photos of example samples. Mt Suess/Gondola Ridge transects extended metres above

Supplementary Fig. 1. Locations of thinning transects and photos of example samples. Mt Suess/Gondola Ridge transects extended metres above Supplementary Fig. 1. Locations of thinning transects and photos of example samples. Mt Suess/Gondola Ridge transects extended 260 24 metres above the modern surface of Mackay Glacier, and included 16

More information

Multibeam Mapping of Feature Rich Seafloor in the U.S. Pacific Remote Islands Marine National Monument and on Mendocino Ridge off the California Coast

Multibeam Mapping of Feature Rich Seafloor in the U.S. Pacific Remote Islands Marine National Monument and on Mendocino Ridge off the California Coast University of New Hampshire University of New Hampshire Scholars' Repository Center for Coastal and Ocean Mapping Center for Coastal and Ocean Mapping 3-2015 Multibeam Mapping of Feature Rich Seafloor

More information

Ice Sheets and Late Quaternary Environmental Change

Ice Sheets and Late Quaternary Environmental Change Ice Sheets and Late Quaternary Environmental Change Martin J. Siegert Bristol Glaciology Centre, School of Geographical Sciences University of Bristol JOHN WILEY & SONS, LTD Chichester New York Weinheim

More information

Geophysics the use of geology, laboratory & field experiments, mathematics, and instruments to study: Earthquakes and Volcanoes seismometers,

Geophysics the use of geology, laboratory & field experiments, mathematics, and instruments to study: Earthquakes and Volcanoes seismometers, Geophysics the use of geology, laboratory & field experiments, mathematics, and instruments to study: Earthquakes and Volcanoes seismometers, tiltmeters, EDM, remote sensing, Energy: oil, gas, hydrothermal

More information

OCN 201 Physiography of the Seafloor

OCN 201 Physiography of the Seafloor OCN 201 Physiography of the Seafloor Hypsometric Curve for Earth s solid surface Note histogram Hypsometric curve of Earth shows two modes. Hypsometric curve of Venus shows only one! Why? Ocean Depth vs.

More information

Monitoring of CO2 Leakage Using High-Resolution 3D Seismic Data Examples from Snøhvit, Vestnesa Ridge and the Western Barents Sea

Monitoring of CO2 Leakage Using High-Resolution 3D Seismic Data Examples from Snøhvit, Vestnesa Ridge and the Western Barents Sea Monitoring of CO2 Leakage Using High-Resolution 3D Seismic Data Examples from Snøhvit, Vestnesa Ridge and the Western Barents Sea Bellwald, B. 1, Waage, M. 2, Planke, S. 1,3,4, Lebedeva-Ivanova, N. 1,

More information

Oceanography. Oceanography is the study of the deep sea and shallow coastal oceans.

Oceanography. Oceanography is the study of the deep sea and shallow coastal oceans. Oceanography Oceanography is the study of the deep sea and shallow coastal oceans. Studying the Ocean Floor To determine the shape and composition of the ocean floor, scientists use techniques such as

More information

Glacial processes and landforms NGEA01, 2014

Glacial processes and landforms NGEA01, 2014 Glacial processes and landforms NGEA01, 2014 Cecilia Akselsson Department of Physical Geography and Ecosystem Science Lund University Geomorphological processes and landforms all over the world Periglacial

More information

CHAPTER 28. PHYSIOGRAPHY Cook Inlet Drainages

CHAPTER 28. PHYSIOGRAPHY Cook Inlet Drainages PEBBLE PROJECT ENVIRONMENTAL BASELINE DOCUMENT 2004 through 2008 CHAPTER 28. PHYSIOGRAPHY Cook Inlet Drainages PREPARED BY: Knight Piésold Ltd. PHYSIOGRAPHY COOK INLET DRAINAGES TABLE OF CONTENTS TABLE

More information

Updating the GEBCO Grid

Updating the GEBCO Grid Updating the GEBCO Grid PAULINE WEATHERALL, GEBCO DIGITAL ATLAS MANAGER, BRITISH OCEANOGRAPHIC DATA CENTRE (BODC), NATIONAL OCEANOGRAPHY CENTRE (NOC), LIVERPOOL, UK. GEBCO TSCOM and SCRUM meeting, Kuala

More information

Preliminary interpretation of the marine geology of Frobisher Bay, Baffin Island, Nunavut

Preliminary interpretation of the marine geology of Frobisher Bay, Baffin Island, Nunavut Preliminary interpretation of the marine geology of Frobisher Bay, Baffin Island, Nunavut B.J. Todd 1, J. Shaw 2, D.C. Campbell 2 and D.J. Mate 3 1 Natural Resources Canada, Geological Survey of Canada,

More information

The Ocean Floor Earth Science, 13e Chapter 13

The Ocean Floor Earth Science, 13e Chapter 13 The Ocean Floor Earth Science, 13e Chapter 13 Stanley C. Hatfield Southwestern Illinois College The vast world ocean Earth is often referred to as the blue planet Seventy-one percent of Earth s surface

More information

Detailed structure of buried glacial landforms revealed by high-resolution 3D seismic data in the SW Barents Sea

Detailed structure of buried glacial landforms revealed by high-resolution 3D seismic data in the SW Barents Sea Detailed structure of buried glacial landforms revealed by high-resolution 3D seismic data in the SW Barents Sea Benjamin Bellwald 1, Sverre Planke 1,2, Stéphane Polteau 1, Nina Lebedova-Ivanova 1, Amer

More information

Changes in bottom morphology of Long Island Sound near Mount Misery Shoal as observed through Repeated Multibeam Surveys

Changes in bottom morphology of Long Island Sound near Mount Misery Shoal as observed through Repeated Multibeam Surveys Changes in bottom morphology of Long Island Sound near Mount Misery Shoal as observed through Repeated Multibeam Surveys Laurie A. Zaleski Laurie.Zaleski@msrc.sunysb.edu Roger D. Flood rflood@notes.cc.sunysb.edu

More information

How do glaciers form?

How do glaciers form? Glaciers What is a Glacier? A large mass of moving ice that exists year round is called a glacier. Glaciers are formed when snowfall exceeds snow melt year after year Snow and ice remain on the ground

More information

MARINE GEOLOGY & GEOGRAPHY

MARINE GEOLOGY & GEOGRAPHY MARINE GEOLOGY MARINE GEOLOGY & GEOGRAPHY Marine Geology 4 LAYERS OF THE EARTH CRUST THICKNESS: VARIES BETWEEN OCEAN & CONTINENTS 5-40 KM STATE: SOLID ELEMENTS: SILICON, ALUMINUM, CALCIUM, SODIUM, POTASSIUM

More information

Digital Elevation Model (DEM) of Sable Island Bank and adjacent areas

Digital Elevation Model (DEM) of Sable Island Bank and adjacent areas GEOLOGICAL SURVEY OF CANADA OPEN FILE 5348 Digital Elevation Model (DEM) of Sable Island Bank and adjacent areas K.J. Webb and E.L. King 2014 GEOLOGICAL SURVEY OF CANADA OPEN FILE 5348 Digital Elevation

More information

Linking surficial geomorphology with vertical structure in high and low energy marine

Linking surficial geomorphology with vertical structure in high and low energy marine Linking surficial geomorphology with vertical structure in high and low energy marine environments Erica Sampaga 1 Advisors: Miles Logsdon, Emily Roland 1 University of Washington, School of Oceanography

More information

Coordinates : A - of midpoint or summit : Lat., Long. } to. Description (kind of feature) : seachannel

Coordinates : A - of midpoint or summit : Lat., Long. } to. Description (kind of feature) : seachannel INTERNATIONAL HYDROGRAPHIC ORGANIZATION INTERGOVERNMENTAL OCEANOGRAPHIC COMMISSION (of UNESCO) IHO/IOC Form No. 1 UNDERSEA FEATURE NAME PROPOSAL (See NOTE overleaf) Ocean or Sea Japan Sea Name proposed

More information

discussion of North America s physical features, including its landforms and bodies of

discussion of North America s physical features, including its landforms and bodies of Chapter 7 Natural Environments of North America Chapter 7 focuses on the natural environments of North America. The chapter opens with a discussion of North America s physical features, including its landforms

More information

Submarine glacial-landform distribution across the West Greenland margin: a fjordshelf-slope transect through the Uummannaq system (70 to 71 N)

Submarine glacial-landform distribution across the West Greenland margin: a fjordshelf-slope transect through the Uummannaq system (70 to 71 N) Submarine glacial-landform distribution across the West Greenland margin: a fjordshelf-slope transect through the Uummannaq system (70 to 71 N) J. A. DOWDESWELL 1 *, K. A. HOGAN 2 & C. Ó COFAIGH 3 1 Scott

More information

OCN 201 Physiography of the Seafloor

OCN 201 Physiography of the Seafloor OCN 201 Physiography of the Seafloor 1 Ocean Depth versus Continental Height Why do we have dry land? Solid surface of Earth is dominated by two levels: Land with a mean elevation of +840 m (29% of Earth

More information

Lawrence A. Lawver Ian W.D. Dalziel Robert Larter University of Texas at Austin, Institute for Geophysics British Antarctic Survey

Lawrence A. Lawver Ian W.D. Dalziel Robert Larter University of Texas at Austin, Institute for Geophysics British Antarctic Survey 20 August 2012 Prof. Hans-Werner Schenke, Chairman GEBCO Sub-Committee on Undersea Feature Names (SCUFN) International Hydrographic Bureau (IHB) 4, Quai Antoine 1er B.P. 445 MC 98011 MONACO CEDEX Principality

More information

Map shows 3 main features of ocean floor

Map shows 3 main features of ocean floor Map shows 3 main features of ocean floor 2017 Pearson Education, Inc. Chapter 3 Marine Provinces 2017 Pearson Education, Inc. 1 Chapter 3 Overview The study of bathymetry determines ocean depths and ocean

More information

Foundations of Earth Science, 6e Lutgens, Tarbuck, & Tasa

Foundations of Earth Science, 6e Lutgens, Tarbuck, & Tasa Foundations of Earth Science, 6e Lutgens, Tarbuck, & Tasa Oceans: The Last Frontier Foundations, 6e - Chapter 9 Stan Hatfield Southwestern Illinois College The vast world ocean Earth is often referred

More information

WHAT IS THE EARTH MADE OF? LITHOSPHERE AND HYDROSPHERE

WHAT IS THE EARTH MADE OF? LITHOSPHERE AND HYDROSPHERE UNIT 8 WHAT IS THE EARTH MADE OF? LITHOSPHERE AND HYDROSPHERE TABLE OF CONTENTS 1 THE STRUCTURE OF THE EARTH... 2 2 THE FORMATION OF THE RELIEF: INTERNAL AND EXTERNAL FORCES.... 2 2.1 Internal forces:

More information

FINMARINET: Inventories and Planning for the Marine Natura 2000 Network in Finland. A.2 Geological inventories of the seafloor Final Report

FINMARINET: Inventories and Planning for the Marine Natura 2000 Network in Finland. A.2 Geological inventories of the seafloor Final Report LIFE07 NAT/FIN/000151 FINMARINET: Inventories and Planning for the Marine Natura 2000 Network in Finland A.2 Geological inventories of the seafloor Final Report Geological Survey of Finland, GTK 1. Introduction

More information

Bathymetry Measures the vertical distance from the ocean surface to mountains, valleys, plains, and other sea floor features

Bathymetry Measures the vertical distance from the ocean surface to mountains, valleys, plains, and other sea floor features 1 2 3 4 5 6 7 8 9 10 11 CHAPTER 3 Marine Provinces Chapter Overview The study of bathymetry determines ocean depths and ocean floor topography. Echo sounding and satellites are efficient bathymetric tools.

More information

UNSTOPPABLE COLLAPSE OF THE WEST ANTARCTIC ICE SHEET IS NOT HAPPENING

UNSTOPPABLE COLLAPSE OF THE WEST ANTARCTIC ICE SHEET IS NOT HAPPENING UNSTOPPABLE COLLAPSE OF THE WEST ANTARCTIC ICE SHEET IS NOT HAPPENING Dr. Don J. Easterbrook, Western Washington University, Bellingham, WA May 19, 2014 A New York Times headline reads Scientists Warn

More information

Glaciers Earth 9th Edition Chapter 18 Glaciers: summary in haiku form Key Concepts Glaciers Glaciers Glaciers Glaciers

Glaciers Earth 9th Edition Chapter 18 Glaciers: summary in haiku form Key Concepts Glaciers Glaciers Glaciers Glaciers 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Earth 9 th Edition Chapter 18 : summary in haiku form Ten thousand years thence big glaciers began to melt - called "global warming." Key Concepts and types of glaciers.

More information

1. Introduction 2. Organization of the meeting 3. Project aims, hypothesis and structure 4. AWAKE phases 5. Project prolongation? 6.

1. Introduction 2. Organization of the meeting 3. Project aims, hypothesis and structure 4. AWAKE phases 5. Project prolongation? 6. Second meeting 1. Introduction 2. Organization of the meeting 3. Project aims, hypothesis and structure 4. AWAKE phases 5. Project prolongation? 6. Additional measurements? 7. Papers!!!!! 8. EGU 2015 9.

More information

Established Global bathymetry yproducts. Undersea feature names. Capacity building

Established Global bathymetry yproducts. Undersea feature names. Capacity building IHO IOC Established 1903 Global bathymetry yproducts Undersea feature names Capacity building A GEBCO data GEBCO s d t sets t and d products d t Global bathymetric grids Global set of bathymetric contours

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION SUPPLEMENTARY INFORMATION (d) (e) Figure S1 Timeseries of the sea ice and overturning circulation response to a cessation of CO 2 emissions. Northern Hemisphere March sea ice cover (km 2 ), Northern Hemisphere

More information

Z046 Seismic Characteristics of Gas Migration Structures on the North Atlantic Margin Imaged by High-resolution 3D Seismic

Z046 Seismic Characteristics of Gas Migration Structures on the North Atlantic Margin Imaged by High-resolution 3D Seismic Z046 Seismic Characteristics of Gas Migration Structures on the North Atlantic Margin Imaged by High-resolution 3D Seismic O.K. Eriksen* (P-Cable 3D Seismic), C. Berndt (IFM-GEOMAR), S. Buenz (University

More information

The french national programme for claiming continental shelf beyond 200 Miles

The french national programme for claiming continental shelf beyond 200 Miles The french national programme for claiming continental shelf beyond 200 Miles Using global bathymetric models in the context of an Extended Continental Shelf submission EXTRAPLAC Using Global Bathymetric

More information

The route towards a new GEBCO grid

The route towards a new GEBCO grid The route towards a new GEBCO grid Pauline Weatherall, GEBCO Digital Atlas Manager British Oceanographic Data Centre (BODC) GEBCO TSCOM/SCRUM meeting, Monaco, October 2012 The route towards a new GEBCO

More information

Chapter Overview. Bathymetry. Measuring Bathymetry. Measuring Bathymetry

Chapter Overview. Bathymetry. Measuring Bathymetry. Measuring Bathymetry CHAPTER 3 Marine Provinces Chapter Overview The study of bathymetry determines ocean depths and ocean floor topography. Echo sounding and satellites are efficient bathymetric tools. Most ocean floor features

More information

An improved bathymetric portrayal of the Arctic Ocean: Implications for ocean modeling and geological, geophysical and oceanographic analyses

An improved bathymetric portrayal of the Arctic Ocean: Implications for ocean modeling and geological, geophysical and oceanographic analyses GEOPHYSICAL RESEARCH LETTERS, VOL. 35, L07602, doi:10.1029/2008gl033520, 2008 An improved bathymetric portrayal of the Arctic Ocean: Implications for ocean modeling and geological, geophysical and oceanographic

More information

Iceberg Plough Marks in the Vicinity of the Norwegian Trough

Iceberg Plough Marks in the Vicinity of the Norwegian Trough Iceberg Plough Marks in the Vicinity of the Norwegian Trough ROBERT H. BELDERSON & JOHN B. WILSON Belderson, R. H. & Wilson, J. B.: Iceberg plough marks in the vicinity of the Norwegian Trough. Norsk Geologisk

More information

UNCLOS Article 76- Formulae and constraint lines

UNCLOS Article 76- Formulae and constraint lines UNCLOS Article 76- Formulae and constraint lines Dr Lindsay Parson (UNCLOS Group, National Oceanography Centre, UK) ABLOS TUTORIAL SESSION - Article 76 of UNCLOS 10th October 2005 IHO/IAG/IOC Advisory

More information

Lecture 21: Glaciers and Paleoclimate Read: Chapter 15 Homework due Thursday Nov. 12. What we ll learn today:! Learning Objectives (LO)

Lecture 21: Glaciers and Paleoclimate Read: Chapter 15 Homework due Thursday Nov. 12. What we ll learn today:! Learning Objectives (LO) Learning Objectives (LO) Lecture 21: Glaciers and Paleoclimate Read: Chapter 15 Homework due Thursday Nov. 12 What we ll learn today:! 1. 1. Glaciers and where they occur! 2. 2. Compare depositional and

More information

Glaciers. (Shaping Earth s Surface, Part 6) Science 330 Summer 2005

Glaciers. (Shaping Earth s Surface, Part 6) Science 330 Summer 2005 Glaciers (Shaping Earth s Surface, Part 6) Science 330 Summer 2005 1 Glaciers Glaciers are parts of two basic cycles Hydrologic cycle Rock cycle Glacier a thick mass of ice that originates on land from

More information

THE MEASUREMENT AND ANALYSIS OF BATHYMETRY, MORPHOLOGY, AND SEDIMENT THICKNESS

THE MEASUREMENT AND ANALYSIS OF BATHYMETRY, MORPHOLOGY, AND SEDIMENT THICKNESS THE MEASUREMENT AND ANALYSIS OF BATHYMETRY, MORPHOLOGY, AND SEDIMENT THICKNESS Ron Macnab Geological Survey of Canada (Retired) OUTLINE OF PRESENTATION Principles and practice of: Echo-sounding Seismic

More information

Resume components. Assignments due Monday. Shape of Puget Sound. Formation and bathymetry

Resume components. Assignments due Monday. Shape of Puget Sound. Formation and bathymetry Assignments due Monday Resume Top four choices of projects, in order of preference One paragraph proposal about topic of choice Weekly schedule Topics you d like to cover in class Math: Complete the calculus

More information

Geophysical Site Surveys

Geophysical Site Surveys Geophysical Site Surveys Simon Oakley Geoscience Team Leader Fugro Survey Limited 16/04/2014 Contents Menu Introduction Section 1 - Geophysical Site Surveys - Seabed Bathymetry - Shallow Geology - Seabed

More information

Ocean Basins, Bathymetry and Sea Levels

Ocean Basins, Bathymetry and Sea Levels Ocean Basins, Bathymetry and Sea Levels Chapter 4 Please read chapter 5: sediments for next class and start chapter 6 on seawater for Thursday Basic concepts in Chapter 4 Bathymetry the measurement of

More information

4. What type of glacier forms in a sloping valley between rock walls? a. firn glacier b. ice sheet c. cirque d. alpine glacier

4. What type of glacier forms in a sloping valley between rock walls? a. firn glacier b. ice sheet c. cirque d. alpine glacier Multiple Choice Questions 1. The term means the loss of snow and ice by evaporation and melting. a. sublimation b. ablation c. erosion d. abrasion 2. What condition must be met for a glacier to begin flowing

More information

The Ocean Floor Chapter 14. Essentials of Geology, 8e. Stan Hatfield and Ken Pinzke Southwestern Illinois College

The Ocean Floor Chapter 14. Essentials of Geology, 8e. Stan Hatfield and Ken Pinzke Southwestern Illinois College The Ocean Floor Chapter 14 Essentials of Geology, 8e Stan Hatfield and Ken Pinzke Southwestern Illinois College The vast world ocean Earth is often referred to as the water planet 71% of Earth s surface

More information

Changes in Geomorphology and Backscatter Patterns in Mount Misery Shoal, Long Island Sound as Revealed through Multiple Multibeam Surveys

Changes in Geomorphology and Backscatter Patterns in Mount Misery Shoal, Long Island Sound as Revealed through Multiple Multibeam Surveys Changes in Geomorphology and Backscatter Patterns in Mount Misery Shoal, Long Island Sound as Revealed through Multiple Multibeam Surveys Laurie A. Zaleski Laurie.Zaleski@msrc.sunysb.edu, Roger D. Flood

More information

Reference: climate data for Prince George and other locations at the back of this handout

Reference: climate data for Prince George and other locations at the back of this handout Name/Date: Socials 9 Unit 2: Cultures, Conflict, and Colonization in British North America 2A Physical Geography of Canada References: Cranny, M. (1998) Crossroads: A Meeting of Nations, Ch. 6 Canadian

More information

Senior Seismologist, Office of Nuclear Regulatory Research, United States Nuclear Regulatory Commission, Washington DC, USA

Senior Seismologist, Office of Nuclear Regulatory Research, United States Nuclear Regulatory Commission, Washington DC, USA OVERVIEW OF THE U.S. NUCLEAR REGULATORY COMMISSION COLLABORATIVE RESEARCH PROGRAM TO ASSESS TSUNAMI HAZARD FOR NUCLEAR POWER PLANTS ON THE ATLANTIC AND GULF COASTS A.M. Kammerer 1, U.S. ten Brink 2 and

More information

ARE YOU READY TO THINK? Look at the first slide THINK PAIR SHARE!

ARE YOU READY TO THINK? Look at the first slide THINK PAIR SHARE! ARE YOU READY TO THINK? Look at the first slide THINK PAIR SHARE! WHAT PROMINENT FEATURE CAN YOU IDENTIFY IN THIS PICTURE? What do you think the different colors represent? Who might find such a picture

More information

Automatic compensation for seafloor slope and depth in post-processing recovery of seismic amplitudes

Automatic compensation for seafloor slope and depth in post-processing recovery of seismic amplitudes O Acoustics 2017 IEEE/OES IN UNDERWATER GEOSCIENCES SYMPOSIUM CPRM, Urca, Rio de Janeiro, Brazil July 25-27, 2017 Automatic compensation for seafloor slope and depth in post-processing recovery of seismic

More information

SPQ Module 20 Ice Flows

SPQ Module 20 Ice Flows SPQ Module 20 Ice Flows When Ray, Richard & Kevin received their sleds in Southern Chili they opened them with excitement, and Kevin remarked they look like little canoes. It is perhaps appropriate that

More information

Introduction to Acoustic Remote Sensing and Seafloor Mapping (AE4-E13) May 19, 2010

Introduction to Acoustic Remote Sensing and Seafloor Mapping (AE4-E13) May 19, 2010 Introduction to Acoustic Remote Sensing and Seafloor Mapping (AE4-E13) May 19, 2010 1 Delft Vermelding Institute onderdeel of Earth organisatie Observation and Space Systems Why Acoustic Remote Sensing?

More information

FOOT OF THE CONTINENTAL SLOPE IN ARTICLE 76

FOOT OF THE CONTINENTAL SLOPE IN ARTICLE 76 FOOT OF THE CONTINENTAL SLOPE IN ARTICLE 76 Vaughan Stagpoole, Institute of Geological & Nuclear Sciences, Lower Hutt, New Zealand, v.stagpoole@gns.cri.nz Ray Wood, Institute of Geological & Nuclear Sciences,

More information

New perspectives on old data: What the earth s past tells us about future sea level rise

New perspectives on old data: What the earth s past tells us about future sea level rise New perspectives on old data: What the earth s past tells us about future sea level rise Bindschadler, Science, 1998 Andrea Dutton Department of Geological Sciences University of Florida Historical record

More information

Lecture Outlines PowerPoint. Chapter 13 Earth Science 11e Tarbuck/Lutgens

Lecture Outlines PowerPoint. Chapter 13 Earth Science 11e Tarbuck/Lutgens Lecture Outlines PowerPoint Chapter 13 Earth Science 11e Tarbuck/Lutgens 2006 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for the use of instructors

More information

Glacial Modification of Terrain

Glacial Modification of Terrain Glacial Modification Part I Stupendous glaciers and crystal snowflakes -- every form of animate or inanimate existence leaves its impress upon the soul of man. 1 -Orison Swett Marden Glacial Modification

More information

Earth s Continents and Seafloors. GEOL100 Physical Geology Ray Rector - Instructor

Earth s Continents and Seafloors. GEOL100 Physical Geology Ray Rector - Instructor Earth s Continents and Seafloors GEOL100 Physical Geology Ray Rector - Instructor OCEAN BASINS and CONTINENTAL PLATFORMS Key Concepts I. Earth s rocky surface covered by of two types of crust Dense, thin,

More information

NOAA/University of New Hampshire Joint Hydrographic Center & Center for Coastal and Ocean Mapping. MAPPS Summer Conference July 23, 2013

NOAA/University of New Hampshire Joint Hydrographic Center & Center for Coastal and Ocean Mapping. MAPPS Summer Conference July 23, 2013 NOAA/University of New Hampshire Joint Hydrographic Center & Center for Coastal and Ocean Mapping MAPPS Summer Conference July 23, 2013 07/23/2013 2 07/23/2013 3 Center Goals To be a world leader in the

More information

Operating conditions in the Arctic: Data acquisition in the Arctic Ocean by the Continental Shelf Project of the Kingdom of Denmark

Operating conditions in the Arctic: Data acquisition in the Arctic Ocean by the Continental Shelf Project of the Kingdom of Denmark Operating conditions in the Arctic: Data acquisition in the Arctic Ocean by the Continental Shelf Project of the Kingdom of Denmark By Christian Marcussen Geological Survey of Denmark and Greenland Danish

More information

Economic and Social Council

Economic and Social Council United Nations Economic and Social Council Distr.: General 25 May 2012 Original: English E/CONF.101/113 Tenth United Nations Conference on the Standardization of Geographical Names New York, 31 July 9

More information

2. Tsunami Source Details

2. Tsunami Source Details 2. Tsunami Source Details The Northland area faces a range of potential tsunamigenic sources that include several local and distant fault systems and underwater landslides. A NIWA study (Goff et al. 2006)

More information

Bathymetric data acquisition in Arctic waters

Bathymetric data acquisition in Arctic waters Bathymetric data acquisition in Arctic waters within the Danish Continental Shelf Project Morten Sølvsten, Uni Bull, Richard Pedersen & Christian Marcussen Arctic-Antarctic Seafloor Mapping Meeting 2011

More information

is also considered to cope with the SCUFN action item 25/21. are also considered to cope with the SCUFN action item 27/83.

is also considered to cope with the SCUFN action item 25/21. are also considered to cope with the SCUFN action item 27/83. Re: Action SCUFN 27/80, 25/21 & 27/83 Generic Terms Group (Y. Ohara, H-C. Han and V. Stagpoole) October 1, 2015 1. Introduction This action item is to cope with the old generic terms that are appeared

More information

Subglacial roughness of the former Barents Sea ice sheet

Subglacial roughness of the former Barents Sea ice sheet JOURNAL OF GEOPHYSICAL RESEARCH: EARTH SURFACE, VOL. 118, 2546 2556, doi:10.1002/2013jf002714, 2013 Subglacial roughness of the former Barents Sea ice sheet E. Gudlaugsson, 1 A. Humbert, 2 M. Winsborrow,

More information

Updating the GEBCO_08 Grid with regional compilations and surveys

Updating the GEBCO_08 Grid with regional compilations and surveys Updating the GEBCO_08 Grid with regional compilations and surveys Pauline Weatherall, GEBCO Digital Atlas Manager, British Oceanographic Data Centre (BODC) GEBCO TSCOM/iSCRUM meeting, SIO, October 2011

More information

Topographic Maps and Landforms Geology Lab

Topographic Maps and Landforms Geology Lab Topographic Maps and Landforms Geology Lab Ray Rector: Instructor Today s Lab Activities 1) Discussion of Last Week s Lab 2) Lecture on Topo Maps and Elevation Contours 3) Construct Topographic Maps and

More information

GCSE GEOGRAPHY SPECIFICATION A

GCSE GEOGRAPHY SPECIFICATION A Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature GCSE GEOGRAPHY SPECIFICATION A Higher Tier Unit 1 Physical Geography H Tuesday 24 May 2016

More information

Stratigraphic and Geoacoustic Characterization of the Outer New Jersey Shelf

Stratigraphic and Geoacoustic Characterization of the Outer New Jersey Shelf Stratigraphic and Geoacoustic Characterization of the Outer New Jersey Shelf John A. Goff Institute for Geophysics, Jackson School of Geoscience University of Texas at Austin JJ Pickle Research Campus,

More information

Plate Tectonics. Essentials of Geology, 11 th edition Chapter 15

Plate Tectonics. Essentials of Geology, 11 th edition Chapter 15 1 Plate Tectonics Essentials of Geology, 11 th edition Chapter 15 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Plate Tectonics: summary in haiku form Alfred Wegener gave us Continental Drift. Fifty years later...

More information

An overview of USGS Hurricane Sandy Supplemental Studies along the Delmarva Peninsula

An overview of USGS Hurricane Sandy Supplemental Studies along the Delmarva Peninsula An overview of USGS Hurricane Sandy Supplemental Studies along the Delmarva Peninsula Neil K. Ganju, Laura L. Brothers, Nathaniel G. Plant, Christopher G. Smith, E. Robert Thieler Coastal and Marine Geology

More information

E Antarctic Ice Unstable, 200ft Sea Level Rise Possible - DK Greenroots

E Antarctic Ice Unstable, 200ft Sea Level Rise Possible - DK Greenroots E Antarctic Ice Unstable, 200ft Sea Level Rise Possible - DK Greenroots by FishOutofWater Thu Apr 22, 2010 at 04:04:48 PM PDT The last time CO2 levels were this high (14-20 million years ago), ice advanced

More information

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Geology 300, Physical Geology Spring 2019 Quiz Chapter 18, Seafloor Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Abyssal fans are made

More information

Last Time. Submarine Canyons and Fans. Turbidites. MAS 603: Geological Oceanography. Lecture 16: Greenhouse vs. Icehouse Earths

Last Time. Submarine Canyons and Fans. Turbidites. MAS 603: Geological Oceanography. Lecture 16: Greenhouse vs. Icehouse Earths UNIVERSITY OF SOUTH ALABAMA Last Time MAS 603: Geological Oceanography Lecture 16: Greenhouse vs. Icehouse Earths Submarine Fans Definition and morphology Transport mechanisms (density currents) Submarine

More information

Mapping and monitoring sedimentary processes and fluxes across fjord deltas - Baffin Island

Mapping and monitoring sedimentary processes and fluxes across fjord deltas - Baffin Island Mapping and monitoring sedimentary processes and fluxes across fjord deltas - Baffin Island John E. Hughes Clarke, Steve Brucker, Auke van der Werfe, Ian Church and Kashka Iwanowska Ocean Mapping Group,

More information

Penobscot Bay 10,000 Years Ago: A submarine canyon was the ancestral Penobscot River valley

Penobscot Bay 10,000 Years Ago: A submarine canyon was the ancestral Penobscot River valley Maine Geologic Facts and Localities May, 1999 : A submarine canyon was the ancestral Penobscot River valley 44 o 11 11.64 N, 68 o 55 30.08 W Text by Stephen M. Dickson, Department of Agriculture, Conservation

More information

Upgrades to the Operational Sea State Forecast System

Upgrades to the Operational Sea State Forecast System NMOC Operations Bulletin No. 53 Upgrades to the Operational Sea State Forecast System Introduction 25 August 2000 The WAM wave model (WAMDI, 1988, Komen et al., 1994) has been the operational sea state

More information

Marine benthic habitats of the George V Land shelf, Antarctica

Marine benthic habitats of the George V Land shelf, Antarctica Marine benthic habitats of the George V Land shelf, Antarctica Linking geophysical and biological data in a polar environment Robin J. Beaman Project acknowledgements Geoscience Australia seismic profiles,

More information

The Continental Shelf North of the Faroe Islands

The Continental Shelf North of the Faroe Islands Partial Submission of the Government of the Kingdom of Denmark together with the Government of the Faroes to the Commission on the Limits of the Continental Shelf The Continental Shelf North of the Faroe

More information

Divergent Boundaries: Origin and Evolution of the Ocean Floor Earth - Chapter 13 Stan Hatfield Southwestern Illinois College

Divergent Boundaries: Origin and Evolution of the Ocean Floor Earth - Chapter 13 Stan Hatfield Southwestern Illinois College Divergent Boundaries: Origin and Evolution of the Ocean Floor Earth - Chapter 13 Stan Hatfield Southwestern Illinois College Mapping the Ocean Floor Depth was originally measured by lowering weighted lines

More information

DANCORE-Day. Master s Thesis

DANCORE-Day. Master s Thesis DANCORE-Day Master s Thesis Interpretation of Shallow Seismic and Sediment Cores from the Area stretching from the Southern Part of Kattegat to the Great Belt in the Period Late-Weichselian to Early Holocene.

More information

Question: What is the primary reason for the great abundance of fish along the Peruvian coast?

Question: What is the primary reason for the great abundance of fish along the Peruvian coast? Buzzer Question # 1 Question Type: toss-up Question Format: Multiple Choice Category: Biology What is the primary reason for the great abundance of fish along the Peruvian coast? Answer W: upwelling Answer

More information

Search and Discovery Article #40536 (2010) Posted June 21, 2010

Search and Discovery Article #40536 (2010) Posted June 21, 2010 Modern Examples of Mass Transport Complexes, Debrite and Turbidite Associations: Geometry, Stratigraphic Relationships and Implications for Hydrocarbon Trap Development* Fabiano Gamberi 1, Marzia Rovere

More information

Effect of Ocean Warming on West Antarctic Ice Streams and Ice Shelves. Bryan Riel December 4, 2008

Effect of Ocean Warming on West Antarctic Ice Streams and Ice Shelves. Bryan Riel December 4, 2008 Effect of Ocean Warming on West Antarctic Ice Streams and Ice Shelves Bryan Riel December 4, 2008 Ice Sheet Mass Balance/WAIS Dynamics -Mass Balance = (Ice/Snow Accumulation) (Surface melting, ice outflux,

More information

Methane release related to retreat of the Svalbard-Barents Sea Ice Sheet

Methane release related to retreat of the Svalbard-Barents Sea Ice Sheet Methane release related to retreat of the Svalbard-Barents Sea Ice Sheet Karin Andreassen*, Alun Hubbard, Henry Patton, Pavel Serov, Sunil Vadakkepuliyambatta, Andreia Plaza-Faverola, Monica Winsborrow

More information

Benthic habitat mapping using multibeam sonar

Benthic habitat mapping using multibeam sonar Benthic habitat mapping using multibeam sonar Iain M. Parnum 1, Alexander Gavrilov 1 and Justy Siwabessy 2 1. Centre for Marine Science and Technology, Curtin University, Perth, Australia 2. Geoscience

More information

Marine Science and Oceanography

Marine Science and Oceanography Marine Science and Oceanography Marine geology- study of the ocean floor Physical oceanography- study of waves, currents, and tides Marine biology study of nature and distribution of marine organisms Chemical

More information