The Bathymetry of the Central Mediterranean Sea in the framework of the EMODnet project a case study of bathymetric data integration and processing.
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1 The Bathymetry of the Central Mediterranean Sea in the framework of the EMODnet project a case study of bathymetric data integration and processing. Federica Foglini & Marzia Rovere CNR-ISMAR Institute of Marine Science GEBCO Science Day 2011 La Jolla 4th October 2011.
2 OUTLINE Introduction Overview of CNR-ISMAR Database Bathymetric data collection and processing The Bathymetry of the Adriatic sea single beam and multi beam data integration case study ISMAR in EMODnet - DTM production and GEBCO data integration EMODnet products in the Central Mediterranean sea WHY BATHYMETRY? - some examples of application in Oceanography, Geology and Geohazard assessment, habitat mapping Conclusions
3 From 1991 to 2011 ISMAR collected about km of seismic profile and bathymetric data on board R/V STRAKHOV URANIA CNR-ISMAR Database
4 CNR-ISMAR Database SB Atlas Deso25 Reson 8160 (50 khz) Konsberg EM300 (30 khz) Kongsberg EM710 ( khz) Konsberg EM3000 (300 khz) Konsberg EM3002 (293 khz, 300 khz, 307 khz) Reson 8125 (455 khz) Geoswath Plus (500 khz)
5 CNR-ISMAR Database EUROSTRATAFORM (European Strata Margin formation) HERMIONE (Hotspot Ecosystem Research and Man's Impact On European Seas) HERMES Hot Spot Ecosystem Research on the Margins of European Seas CARTOGRAPHY OF ITALIAN SEAS MAGIC Project MAGIC (MArine An integrated research project for acquiring high-resolution Geohazards along the morphobathymetry and producing geohazard maps of the Italian Coasts) continental margins of Italy
6 CNR-ISMAR DATA COLLECTION
7 GeoSwath 500 khz DTM 0.5m 60m
8 CNR-ISMAR DATA COLLECTION
9 DTM RESOLUTION 5M EM3000
10 CNR-ISMAR DATA COLLECTION
11 DTM RESOLUTION 20 m RESON 8160
12 CNR-ISMAR DATA COLLECTION
13 DTM RESOLUTION 20 m TWIN SLIDES
14 CNR-ISMAR DATA COLLECTION
15 N DTM RESOLUTION 50M EM12 20 Km
16 CNR-ISMAR DATA COLLECTION
17 DTM RESOLUTION 25 m EM3002D (10-150m) EM710 ( ) EM 12 (>500) N 4 km
18 DATA PROCESSING Features Detection DATA ANALYSIS AND ERROR DETECTION DATA INTERPRETION AND ACCURATE MANUAL CLEANING
19 ADRIATIC SEA - SB and MB DATA INTEGRATION Single Beam echo soundings Venice Multi Beam swath bathymetry -500 SB interpretation and processing ,000-1,050-1,100-1, , ,000 Pescara Bari 150, , , , , , , , , ,000 Multi beam Data Processing for single surveys Variable density XYZ soundings High density xyz soundings Import SB and MB Soundings Variable resolution Tuning filters Variable Epsilon model (TIN) Export final uniform GRID
20 DTM 200m THE ADRIATIC SEA - SB and MB DATA INTEGRATION Variable resolution Tuning filters Variable Epsilon model (TIN)
21 THE ADRIATIC SEA - SB and MB DATA INTEGRATION
22 THE ADRIATIC SEA - SB and MB DATA INTEGRATION Import SB and MB Soundings Variable resolution Tuning filters Variable Epsilon model (TIN) Export final uniform GRID
23 EMODnet - Central Mediterranean sea DTM Regional Coordinator
24 EMODnet DTM procedure of production CDI production.xyz precessed soundings from different sources 1/16 arcminute DTM 1/4 arcminute DTM Gebco 30 arc-second integration Smoothing Final DTM Depth is calculated for each elementary polygons where soundings exists
25 EMODnet - Central Mediterranean sea 1/16 DTM 7 values FINAL DTM 10 values 1. Depth MIN 2. Depth MAX 3. Depth Average 4. Depth STD 5. Interpolation 6. Elementary surface 7. Depth smoothed 8. Depth smoothed offset 9. CDI ID 10.DTM SOURCE
26 EMODnet - Central Mediterranean sea
27 EMODnet - Central Mediterranean sea
28 WHY BATHYMETRY?? Oceanography Geology and Geohazard assessment Habitat mapping SOME EXAMPLES By Marzia Rovere
29
30
31
32 BIONOMICS CHART BACKSCATTER CORALLIGENOUS MAERL MATTE POSIDONIA SAND SAND POSIDONIA SCATTERED GRASSLAND ON SAND
33
34 8 km underwater shelf edge delta 22 km Posada braided river
35 10 km 4 km
36 5 km 4 km
37
38
39 Near shore canyons: Niceto Canyon oil refinery plant in Milazzo
40 Near shore canyons: Gioiosa Marea Touristic place
41 CONCLUSIONS CNR-ISMAR collected huge amount of bathymetric data in the Central Mediterranean Sea in the framework on National and European projects. Bathymetric data processing and merging is one of the main challenge because of different data sources, systems, resolution and water depth CNR-ISMAR is able to make the bathymetric data available to the global community in the framework of EMODnet, following EMODnet QA/QC Standard Bathymetry is fundamental for many scientific issues and applications from oceanography to geology
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