Creating a Bathymetric Database & Datum Conversion

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1 Creating a Bathymetric Database & Datum Conversion Mitchell Brown Civil Engineering Technician Mitchell.E.Brown@erdc.dren.mil June 11, 2012 US Army Corps of Engineers BUILDING STRONG

2 Report Documentation Page Form Approved OMB No Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. 1. REPORT DATE 11 JUN REPORT TYPE 3. DATES COVERED to TITLE AND SUBTITLE Creating a Bathymetric Database & Datum Conversion 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) U.S. Army Corps of Engineers,U.S. Army Engineer Research and Development Center,3909 Halls Ferry Road,Vicksburg,MS, PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR S ACRONYM(S) 12. DISTRIBUTION/AVAILABILITY STATEMENT Approved for public release; distribution unlimited 13. SUPPLEMENTARY NOTES 1st CMS Webinar, Coastal Inlets Research Program, June 11-15, ABSTRACT 11. SPONSOR/MONITOR S REPORT NUMBER(S) 15. SUBJECT TERMS 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT a. REPORT unclassified b. ABSTRACT unclassified c. THIS PAGE unclassified Same as Report (SAR) 18. NUMBER OF PAGES 24 19a. NAME OF RESPONSIBLE PERSON Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18

3 Introduction to Bathymetric Databases in SMS Introduction to working with bathymetric datasets Importing Datasets (xyz, points, shapefiles, other ascii) Datum Conversion SMS conversion (Corpscon; Global Mapper) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

Federally maintained entrance and south channel (15 years) NAN-supported field data collection Included

4 Multiple Bathymetric Datasets Limited bay bathymetry NOAA Offshore datasets LIDAR Shoreline and nearshore (important for structure resolution) Channel NJ State maintains north channel and north bay channel Federally maintained entrance and south channel (15 years) NAN-supported field data collection Included bathymetry of the backbay (Spring High Tide) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

5 Common Spatial Reference Datum & Vertical Datum Horizontal Projection & Datum: Pick a system in metric units that is planar (UTM; State Plane) Vertical Projection & Datum: Must be in metric as well; Datum is not necessary (Local) Need to convert all bathymetric data 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

6 Tides and Currents (NOAA) _retrieve.shtml?type=datums 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

7 Vertical Datum Conversions NOAA (Long Branch) COE NAN Benchmark MSL 0.24 ft (0.073 m) NAVD ft (0.686 m) 1.1 ft (0.335 m) NGVD ft (0.485 m) 1.9 ft (0.579 m) MLW 0.18 ft (0.055 m) MLLW 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

8 Prep for the Coastal Modeling System Based off of a Cartesian grid Planar coordinate system Model computation is in metric and depths are positive from zero (elevations are flipped) Grid is generated based off of a single bathymetry file stored in SMS scatterset file format Vertical datum is not specified and is assumed local The boundary condition forcing (tidal) must be in the same datum as the bathymetry Typically modeling grids are brought to a mean datum such as mean sea level (msl) or mean tide level (mtl) This requires that all datasets are brought in to unified projection, datum, and units Shark River Inlet bathymetry will be converted to State Plane horizontal coordinates in meters with the vertical datum set to MSL in meters 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

Reprojecting Coordinates and Changing Datums Object Projection tells SMS the present projection. Checking Specify Project Projection is used to change the projection.

9 Reprojecting Coordinates and Changing Datums Object Projection tells SMS the present projection. Checking Specify Project Projection is used to change the projection. It will physically change the coordinates of everything loaded in SMS. The projection settings are saved in the SMS project file (*.sms). 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

Converting Elevations to Depths (CMS Requirement) CMS uses Depths

the water column) instead of Elevations (positive values are at

data by scaling, translating (adding/subtracting), or rotating

Select Depths Elevations Flips negative elevations to positive

10 Converting Elevations to Depths (CMS Requirement) CMS uses Depths (positive values are at the water surface and down deeper into the water column) instead of Elevations (positive values are at the water surface and above) Data Transform Can adjust scatterset data by scaling, translating (adding/subtracting), or rotating horizontal or vertical. Select Depths Elevations Flips negative elevations to positive depths. Necessary for CMS model calculation. 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

NAN Channel Surveys 15 Year Record of Bathymetry Date Survey Type Date Survey Type 1-Jan-1995 Condition 28-Mar-2007 Condition 6-Jan-1998 Condition 30-Aug-2007 Before Dredge 6-May-1999 Condition

11 NAN Channel Surveys 15 Year Record of Bathymetry Date Survey Type Date Survey Type 1-Jan-1995 Condition 28-Mar-2007 Condition 6-Jan-1998 Condition 30-Aug-2007 Before Dredge 6-May-1999 Condition 4-Jan-2008 After Dredge 11-Apr-2000 Condition 25-Mar-2008 Condition 16-Apr-2002 Condition 9-Jun-2008 After Dredge 6-Dec-2002 Before Dredge 31-Oct-2008 After Dredge 18-Jan-2003 After Dredge 8-Dec-2008 Before Dredge 7-Jul-2003 Condition 6-Jan-2009 After Dredge 7-Aug-2003 After Dredge 15-Apr-2009 Before Dredge 28-Apr-2004 Condition 1-May-2009 After Dredge 10-Jun-2005 Condition 20-Aug-2009 Before Dredge 23-Dec-2005 After Dredge 10-Dec-2009 After Dredge 23-May-2006 Condition 6-Jan-2010 After Dredge 27-Nov-2006 Condition Horizontal Datum: State Plane NAD27 New Jersey 2900 (ft) Vertical Datum: MLW (ft) COE Datum (not local NOAA benchmark) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

Conversions NOAA (Long Branch) COE NAN Benchmark MSL 0.24 ft (0.073 m) NAVD 88 2.25 ft (0.686 m) 1.1 ft (0.335 m) NGVD 29 1.59 ft (0.485 m) 1.9 ft (0.579 m) 0.

12 Conversions NOAA (Long Branch) COE NAN Benchmark MSL 0.24 ft (0.073 m) NAVD ft (0.686 m) 1.1 ft (0.335 m) NGVD ft (0.485 m) 1.9 ft (0.579 m) 0.18 ft (0.055 m) NAN Surveys MLW MSL 1.9ft ft (0.24ft) = 2.76 ft (.841m) MLW MLLW 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

841m) Horizontal Datum: State Plane NAD27 New Jersey 2900 (ft) Vertical

13 NAN Channel Surveys Extended in to Bay Full Channel Survey NAN Surveys MLW MSL 1.9ft ft (0.24ft) = 2.76 ft (.841m) Horizontal Datum: State Plane NAD27 New Jersey 2900 (ft) Vertical Datum: MLW (ft) COE Datum (not local NOAA benchmark) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

$ff.ii'f.il ~ @ Dataset Calculator!!!!}"' c:.- ~ ~ ~... to~~~~~...; ~a.s tl>t ""'"'...,----- r F E:\-di ~ftllt'9w -E:II:J :tjg:.4_1 W< ~ &J...,f He>O. se ~... "" Con tour (ft) -"""" 35.$ ! Compare data sets! L.i MiiD $) Spatial! Smooth data sets i! Geometry! L... Grid Spacing 1$1 Temporal L.

! Compare data sets! L.i MiiD $) Spatial! Smooth data sets i! Geometry! L... Grid Spacing 1$1 Temporal L.

Calculator Data Sets EJ Ej 3364_0409_ft_MLW (act ive)! tmj a. Z i.. tml b. x locat ion! tml c. y location L..tmJid@ Add to Expression I Output data set name : lm msli Data Set Info.

14 ff.ii'f.il Dataset Calculator!!!!}"' c:.- ~ ~ ~... to~~~~~...; ~a.s tl>t ""'"'...,----- r F E:\-di ~ftllt'9w -E:II:J :tjg:.4_1 W< ~ &J...,f He>O. se ~... "" Con tour (ft) -"""" 35.0 (lltt(u(idi~.,..l.«o.-..,,_. '""""""- n: S~:~.. -~ l'tl!st> ~.,Coolt~ >ij~ Ii,.Vdn )~~ !I ~-tt ~~ ~ ~~ Q Y ~ ~ ~l ~- ~ ~ ~~dlh(tlojpl)' ot t""6mfoll.-... Dataset Toolbox Tools , l;l Math!! Compare data sets! L.i MiiD $) Spatial! Smooth data sets i! Geometry! L... Grid Spacing 1$1 Temporal L... Sample time steps 1$1 Conversion i ' Scalar to Vector EJ Coastal '- Wave Length and Celerity i ' Gravity Waves 13 Modification i Map activity '- Filter Update Available Tools Data Calculator Data Sets EJ Ej 3364_0409_ft_MLW (act ive)! tmj a. Z i.. tml b. x locat ion! tml c. y location L..tmJid@ Add to Expression I Output data set name : lm msli Data Set Info... Time Steps ri Use all time steps Calculator I d J I ( I ) I min I * I In I x"y I max I - I log I sqrt I ave I I + I 1/x I abs I trunc I II I Compute A - I Help... Done 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

ascii format MLW NAVD88 + 2.41 ft (0.735 m) MLW MSL + 2.17 ft (0.

15 NJ DEP Channel Surveys June 2009 Survey Provided conversion from local datum to NAVD88: XYZ pulled out of drawing and changed to ascii format MLW NAVD ft (0.735 m) MLW MSL ft (0.661 m) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

16 Field Data Collection Multibeam Bay Bathymetry (August 2009) Horizontal Datum: State Plane NAD83 New Jersey 2900 (m) Vertical Datum: NAVD88 (m) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

LIDAR Files are emailed in separate sections from the NOAA CSC Archive Typically several to 10s of files that are 5-100 mb in size Compiling takes time Points have been sampled/filtered

17 LIDAR Files are ed in separate sections from the NOAA CSC Archive Typically several to 10s of files that are mb in size Compiling takes time Points have been sampled/filtered and cropped to area of interest Horizontal Datum: State Plane NAD83 New Jersey 2900 (ft) Vertical Datum: NAVD88 (ft) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

$._, wo/8 NGDC 3 Arc -Second Coastal Relief Model Bdlt.yrn~lry &: GluUttl R~lier Scie -tific s:? lla -d:;:hi)_ prod.jets:. a11d ;;en c:s br :c:-..:11 di:'~j ~ dld ::u U U::~1... ~,~J Uiu Ldl ::~h::~\.$ $~1:t'J110 WCIPC foltp."jji.hp.:<. HO [J<~L~ C1.:'11L:rfJr) 9i.<d B<lltr,oT ~.:~L-~(IHO DCDE; t~wn:a:tona ocean \l;p~:tn~ P'ol:c:s Mu 11~ccm u::n~ ~J():c:l -lr tn~i.'j:hi. =unip.~ r.iltfl S:.~l~,:~li.$ $u<1:lr ) ql:<ll El3\'<ltiO ~ MO ::19 (DE \1"1 CIS ~OV31'y P Jtt; I J Obal hel et(li 1 11 V, LIIJI U, u;...,_:~) Tnrmgrnphy U,nd FIP.vntinn<>)! GEBCO. tnt:rn31j:msl :.. ~e!$ $'n Wai)WIJ l{el ated u at a at NLiLn:: '1: rin 3 Geol:gy to Geop-r.. ~ics s:diment Thi:l.:ne~s T~,_,.,.,,;~ 8-. Ti.,.~> Al TU[JJI,]":-I[J"\" ~103\l L::m~ 1 K~ B:cc EIC'Y<l:IOIP'JICC: (GLOEE) l.u. Ut::rtE 11a~e3 o :JJ-3:!$

18 ff.ii'f.il ~ NOAA NATIONAL GEOPHYSICAL W ' I,JATA CENTER Coastal Relief Model (DTM/DEM) l t~ txi -n6" ucr tell' 100 «.-.- 1$ -'I'Q' ~ I.._, wo/8 NGDC 3 Arc -Second Coastal Relief Model Bdlt.yrn~lry &: GluUttl R~lier Scie -tific s:? lla -d:;:hi)_ prod.jets:. a11d ;;en c:s br :c:-..:11 di:'~j ~ dld ::u U U::~1... ~,~J Uiu Ldl ::~h::~\..,tiuu uuu:i~ ~metrv (Oa:~an Depths) ~] Ctc:lc CUCIOII )'d r:rraoi=tr.rr...p.~trn.-ai T=:wl'lr-i nunrl=rlinn r:rms :)1JnP.Pmrh.t::, FTPe.r.-.P.=.:<. Conla:tiJL'L' l:l:llh'k"'ctfic &. ~1:t'J110 WCIPC foltp."jji.hp.:<. HO [J<~L~ C1.:'11L:rfJr) 9i.<d B<lltr,oT ~.:~L-~(IHO DCDE; t~wn:a:tona ocean \l;p~:tn~ P'ol:c:s Mu 11~ccm u::n~ ~J():c:l -lr tn~i.'j:hi. =unip.~ r.iltfl S:.~l~,:~li.~.:~-t.:wi'~':'iJD<~h T'~Cidln: D:a1:.~ ~-nl"l.=t ReJiFf o; -!'llnllmiln1 L)rJ~1i n :. <4'::lllllo''> ~- ('.u::-<>lin~o" ::.u<1:lr ) ql:<ll El3\'<ltiO ~ MO ::19 (DE \1"1 CIS ~OV31'y P Jtt; I J Obal hel et(li 1 11 V, LIIJI U, u;...,_:~) Tnrmgrnphy U,nd FIP.vntinn<>)! GEBCO. tnt:rn31j:msl :.. ~e!'n Wai)WIJ l{el ated u at a at NLiLn:: '1: rin 3 Geol:gy to Geop-r.. ~ics s:diment Thi:l.:ne~s T~,_,.,.,,;~ 8-. Ti.,.~> Al TU[JJI,]":-I[J"\" ~103\l L::m~ 1 K~ B:cc EIC'Y<l:IOIP'JICC: (GLOEE) l.u. Ut::rtE 11a~e3 o :JJ-3:!COn::l I OPJ!J'::IP~IC Ua1a li lll.ar.h\"p. ~rn:"': nr-p1 P.<::,.=rrh YP."i,.=.1r: rl ::;tnhu~"'.)<:th~r-etric da-:a fr=m :oa5tal ::nd O.)En o:ea- :II :d~, uduj Jl~ ::1Lti 11,. d~ ll!:o' 1_11~-l!:o'llll dl""iiy:o' fur ~J:Jo\.~1 Hdiur =l O~.;~,;du S= ti.~ :~ t.l::1l: ~.;_ll:o~u.~u n s:.~:port o~ dl:rtnq a'"d na1iq:ton. 'J:..;J:..: :or pies :1e: oijtal -..l.w..i:..ul :.-rin.jt:: reli::f 1.=t.=.h?I"P., r:n.=.o::t.=l rp.hp.t -.nrl=d-o: n 1.~ r:n.=.-o:t=l "!r=.=.-o:, TP..=.-=!<:: rlg1t.=.l P.IP.II".=.tnr m""'i.-:p.i= t,-u- l-<;1.n.=.rn nun::l::tion :osea :h, :~rd st:: fl"a ::1:;: g1i:-ded JJ:.uyrdJ.ni~.; Lldld u ulh~ JLCBE ~r J.~~.;l. \J.:.).: :..::rticip.:r:c:; in rumcrou::; intcmjt onj occjn.:1ltll..llij. :.r::cct:::, JIC op:::r:tc::: j):::.rtcrnjo:rji lydroora:lt-ic U(;ani~atiJr (JI ul J:~t:: lente~ ~Jr ") 1)11"".=.1 1\.=.thymP.--y. I:J "):"':")-,! rn hp.'".=.it -t thp. -.errl::er na:: ons fllll~ t..<.:l: _ Holle..:on::~ct!; I _ :rta L' s:hir-et:: l l:::ucaton Ne11~ 1 1-'~ tac'y 1-'cli:, I ::ita tfap ::!Je~:.n~: d:m. nf:t"~no:~a.:ov Generate a 3 sec (pt/3 rd second) grid ~) QMc;.. ~ r--3 _,..,, _ tlomr _...\.0..(- t 'w(llt dwr... ~ XVI4-...) {f,_~_.,, (o jllll - t -.ctu&rr:)...- "' c-. >i1110mo- t;/ooolf,~c..wc- _, st CMS Webinar, Coastal Inlets Research Program, June 11-15,

19 Coastal Relief Model Horizontal Datum: Geographic NAD83 Vertical Datum: MSL (m) Not accurate for shallow bathymetry (used for offshore) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

20 Extra Bathymetry Convert shoreline shapefile in SMS Horizontal Datum: State Plane NAD83 New Jersey 2900 (ft) Added extra bay contour (set to m) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

Create a Contour Polyline in the Map Module Select Default Coverage under Map Data Type Generic Mapping/Observation/Shoals Draw arcs (polylines) feature

21 Create a Contour Polyline in the Map Module Select Default Coverage under Map Data Type Generic Mapping/Observation/Shoals Draw arcs (polylines) feature with tool Select arcs and convert the z elevation to the desired contour elevation 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

Create Scatterset Points from Map Data Select arcs to

Redistribute Vertices Specify Spacing based on horizontal

Objects Map>Scatter Include Feature Pts and vertices and the

22 Create Scatterset Points from Map Data Select arcs to redistribute the spacing of vertices Feature Objects Redistribute Vertices Specify Spacing based on horizontal coordinate system units (metric in this case) Feature Objects Map>Scatter Include Feature Pts and vertices and the Arc Elevations 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

and elevations in overlapping datasets) 1 st CMS

23 All Files Referenced to Same Horizontal and Vertical Datum Delete unnecessary data points (check alignment and elevations in overlapping datasets) 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

Merging Scattersets Merging all scattersets will

24 Merging Scattersets Merging all scattersets will integrate all points. Overlapping areas of scattersets should either be deleted, or use a separate method of merging (by prioritizing using triangles). Select the dataset 1 st CMS Webinar, Coastal Inlets Research Program, June 11-15,

25 Surface-water Modeling System (SMS) Questions? Mitch Brown st CMS Webinar, Coastal Inlets Research Program, June 11-15,

Creating a Bathymetric Database & Datum Conversion

Creating a Bathymetric Database & Datum Conversion Mitchell Brown Civil Engineering Technician Mitchell.E.Brown@erdc.dren.mil June 11, 2012 US Army Corps of Engineers BUILDING STRONG Introduction to Bathymetric