BATHY_2MH.ASC: Hillshade of bathymetry collected by the U.S. Geological Survey off the southern shore of Martha's Vineyard, MA 2007 (ASCII RASTER)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2009
Title:
BATHY_2MH.ASC: Hillshade of bathymetry collected by the U.S. Geological Survey off the southern shore of Martha's Vineyard, MA 2007 (ASCII RASTER)
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2008-1288
Publication_Information:
Publication_Place: Woods Hole
Publisher: U.S. Geological Survey
Online_Linkage:
<https://pubs.usgs.gov/of/2008/1288/GIS_catalog/Bathy/bathy_2mh.zip>
Online_Linkage: <https://pubs.usgs.gov/of/2008/1288/html/gis.html>
Larger_Work_Citation:
Citation_Information:
Originator: Denny, J.F.
Originator: Danforth, W.W.
Originator: Foster, D.S.
Originator: Sherwood, C.R.
Publication_Date: 2009
Title:
Geophysical Data Collected off the South Shore of Martha's Vineyard, Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: online
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2008-1288
Publication_Information:
Publication_Place: Woods Hole
Publisher: U.S. Geological Survey
Online_Linkage: <https://pubs.usgs.gov/of/2008/1288/>
Description:
Abstract:
The USGS Woods Hole Science Center conducted a nearshore geophysical survey offshore of the southern coast of Martha's Vineyard, in the vicinity of the Martha's Vineyard Coastal Observatory (MVCO) in August 2007. This mapping program was part of a larger research effort supporting the Office of Naval Research (ONR) Ripples Directed-Research Initiative (DRI) studies at MVCO by providing data collection and modeling. The geophysical data will be used to provide initial conditions for wave and circulation models for the study area. Ultimately, geophysical mapping, oceanographic measurements and modeling will help to improve our understanding of coastal sediment-transport processes.

The geophysical mapping utilized a suite of high-resolution instrumentation to map the surficial sediment distribution, depth and sub-surface geology: dual-frequency 100/500 KHz sidescan-sonar system, 234-KHz interferometric sonar, and 500 Hz -12 KHz chirp sub-bottom profiler. The survey was conducted aboard the M/V Megan Miller August 9-13, 2007. The study area covers 35 square kilometers from about 0.2 km to 5-km offshore of the south shore of Martha's Vineyard, and ranges in depth from ~ 5 to 20 meters.

Purpose:
This bathymetric data set will be used to define the seafloor morphology in the vicinity of the Martha's Vineyard Coastal Observatory and to provide initial conditions for wave and circulation modeling. The hillshade provides a false sun-illuminated view of the seafloor which can enhance seafloor features and aid in the interpretation of the seafloor topography. Providing the data in ASCII Raster format provides a format that can be readily transferred and converted to a grid.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070809
Ending_Date: 20070813
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.601447
East_Bounding_Coordinate: -70.510810
North_Bounding_Coordinate: 41.349941
South_Bounding_Coordinate: 41.300598
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Field Activity Number 07011
Theme_Keyword: R/V Megan Miller
Theme_Keyword: Bathymetry
Theme_Keyword: Interferometric sonar
Theme_Keyword: ESRI Grid
Theme_Keyword: SEA SWATHplus 234 kHz
Theme_Keyword: Hillshade
Theme:
Theme_Keyword_Thesaurus: ISO 19115
Theme_Keyword: oceans
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: North America
Place_Keyword: Southeastern Massachusetts
Place_Keyword: Martha's Vineyard
Place_Keyword: Cape Cod
Place_Keyword: Elizabeth Islands
Place_Keyword: Atlantic Ocean
Place_Keyword: United States
Place_Keyword: Northeast United States
Place_Keyword: Atlantic Ocean
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700x2311
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
<https://pubs.usgs.gov/of/2008/1288/GIS_catalog/Bathy/bathy_2mh_sm.jpg>
Browse_Graphic_File_Description:
Thumbnail image of hillshade of the bathymetric data collected by the U.S. Geological Survey off the southern shore of Martha's Vineyard, 2007
Browse_Graphic_File_Type: JPEG
Data_Set_Credit: U.S. Geological Survey
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
Data_Quality_Information:
Logical_Consistency_Report:
All bathymetric data were collected during USGS cruise 07011 using a SWATHplus swath bathymetric system and a Coda Octopus F180R motion reference unit. Quality control was conducted during processing of the data. Any spurious data or artifacts were removed or minimized.
Completeness_Report:
All bathymetric data collected during USGS cruise 07011 off of the south shore of Martha's Vineyard were used to generate the hillshade of the bathymetry. Tie lines that fell close to areas of obstruction (e.g. MVCO 12-m node and tower), were not included in the final grid due to poor data quality.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Differential Global Positioning System (DGPS) navigation data were acquired with the forward, or primary, Coda Octopus F180R Motion Reference Unit (MRU) DGPS antenna and transmitted via a network connection to the SWATHplus data collection software. The F180R MRU is part of the rigid sidemount used to deploy the SWATHplus bathymetric system, and is mounted on the bracket holding the SWATHplus transducers. The F180R MRU consists of 2 L1 antennas used for position and heading. The antennas are mounted on a rigid horizontal pole, 6.76 meters above the F180R MRU, offset in a forward/aft configuration (see 'source contribution' for a full description of the F180R). DGPS accuracy is 1 to 3 meters, depending on the distance from a US Coast Guard coastal repeater station (<http://www.navcen.uscg.gov/>).
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Bathymetric data were ultimately referenced to a local vertical datum. The Woods Hole Oceanographic Institution Martha's Vineyard Coastal Observatory (MVCO) maintains an instrumented node at a depth of 12 meters that records a variety of oceanographic data including water level heights above the node (<http://www.whoi.edu/mvco/description/description2.html>). Oscillation of the water level above the node is recorded in a file that was downloaded and parsed for these heights (OcnDat_s, see: <http://www.whoi.edu/mvco/data/oceandata.html>). These heights are referenced to a vertical datum of 11.68 meters, which represents a long term mean depth directly above the node (August 2006 - present). These data are not tied into any chart datum (i.e. Mean Lower Low Water). We chose to use the local water level heights because other oceanographic data from the 12-meter node will be used in conjunction with the bathymetric grid for oceanographic modeling. All data will be referenced to the local vertical datum at the 12-meter node.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070809
Ending_Date: 20070813
Source_Currentness_Reference: ground condition
Source_Contribution:
Swath bathymetric data were collected using an SEA Ltd SWATHplus 234-kHz Interferometric Bathymetric Sonar (<http://www.sea.co.uk/swathplus.aspx?nav=products> ) during survey operations. The SWATHplus system was mounted as a sidemount and positioned on the starboard side of the R/V Megan Miller. Line spacing varied from 40 meter in ~ 5 to 15 meter water depth to 70 meters in ~15 - 25 meter water depth. Data files were recorded by SEA software SWATHplus 3.05.19 in the SWATHplus SXR format. Data collection parameters are saved into a SWATHplus session file in SEA's SXS format that can be later used for data replay. Pitch, roll, heading, and heave information were recorded using a Coda Octopus F180R motion reference unit (MRU) (see: <http://www.codaoctopus.com/motion/f180/index.asp>) and transmitted via network connection to the SWATHplus data collection software. The MRU sensor was mounted directly above the SWATHplus transducers, thereby minimizing "lever arm" offsets which can lead to positioning and depth errors in the bathymetric data. The F180R series MRU uses two L1 antennas for position and heading accuracy. These were mounted directly above the MRU with an offset of 6.76 meters. The antennas are mounted on a rigid horizontal pole with a separation of 1 meter and are offset from the MRU in a forward/aft configuration. The forward offset of the primary antenna from the MRU is 0.5 meters, with no port/starboard offset.

Sound Velocity Profiles (SVP): Fourteen sound velocity casts were collected at various intervals during the USGS cruise 07011 using an Applied Microsystems SV Plus v2 instrument (see <http://www.appliedmicrosystems.com/products/productDetails.aspx?id=1> for details). Sound velocity profiles (SVP) were generally collected at the eastern and western ends of the survey area, corresponding to the start and/or end of geophysical line data collection. This procedure was primarily followed to coordinate collection of SVP casts with the beginning or end of trackline. This was acceptable because only small variations in the speed of sound were noted throughout the survey area and negligible refraction artifacts were visible within the swath bathymetric data.

Process_Step:
Process_Description:
Offsets of the SWATHplus transducers and DGPS navigation antenna from the F180R motion reference unit (MRU), which is the designated common reference point (CRP), were verified as entered correctly into the SWATHplus session file for the survey. Offsets forward, below, and to the right (starboard) of the CRP are considered positive:

Primary navigation antenna to MRU: Height offset: -6.76 meters Forward offset: 0 meters Starboard offset: 0 meters

Draft of the MRU below water line: 2.6 meters.

Offset of SWATHplus transducer 1 (port side) from the CRP: Height offset: 0.158 meters Forward offset: -0.019 meters Starboard offset: -0.11 meters

Offset of SWATHplus transducer 2 (starboard side) from the CRP: Height offset: 0.158 meters Forward offset: -0.019 meters Starboard offset: 0.11 meters

Software: SWATHplus 3.05.19

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Water level heights for the duration of the survey were incorporated into the SWATHplus session file. The Woods Hole Oceanographic Institution Martha's Vineyard Coastal Observatory (MVCO) maintains an instrumented node at a depth of 12 meters that records a variety of oceanographic data including water level heights above the node (<http://www.whoi.edu/mvco/description/description2.html>). Oscillation of the water level above the node is recorded in a file that was downloaded and parsed for these heights (OcnDat_s, see: <http://www.whoi.edu/mvco/data/oceandata.html>). These heights are referenced to a vertical datum of 11.68 meters, which represents a long term mean depth directly above the node (August 2006 - present). These data are not tied into any chart datum (i.e. Mean Lower Low Water). The data were reformatted for input into the SWATHplus session file and stored in the file 2007_JD221-225_tides_swathplus.dat. We chose to use these water level heights because other oceanographic data from the 12 meter node will be used in conjunction with the bathymetric grid for oceanographic modeling.

Software: SWATHplus 3.05.19

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Data from the sound velocity profiles were incorporated into the SWATHplus session file. The velocity data is stored in Microsoft Office Excel 2003 SP3 csv format, and the location and time, as well as the velocity information, were extracted from the csv file and entered into the sound velocity profile dialog in SWATHplus. One Julian day's worth of sound velocity data was entered into SWATHplus; the program is limited to a total of 5 velocity profiles at a time.

Software: SWATHplus 3.05.19

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Various filters were set in the SWATHplus software in order to refine the depth of the seafloor across the swath for each ping based on the phase and amplitude of the returning sonar signal. Only the filters listed below were set, all others were turned off. Filter settings:

Low amp: 100 Range: Max amplitude 4 meters, min amplitude 0 meters Quality: 0.8 Box: Min depth 3 meters, max depth 30 meters, min horizontal range 0 meters, max horizontal range 25 - 50 meters (increasing with trackline spacing). Along track 1: Max depth difference 10 meters, window size 10, learn rate 0.6 Along track 2: Max depth difference 0.5 meters, window size 2, learn rate 0.8 Mean output processed pixel size: 1meter.

Software: SWATHplus 3.05.19

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Patch test lines were replayed through the SWATHplus software after the tides, velocity profiles (for that day), and filters were set and saved in the SWATHplus session file. Processed data files were saved in the SWATHplus sxp format.

Software: SWATHplus 3.05.19

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
The patch test processed sxp files (patch1 - patch7.sxp) were imported into the SWATHplus Grid Processor program and run 3 times through the calibration tool to determine any static offsets for roll. Results: Port roll offset = +0.64 degrees, Stbd roll offset = -0.91 degrees. These offsets were then entered into the SWATHplus session file.

Software: Grid Processor 3.02.19

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Raw SXR bathymetry data were replayed line by line through the SEA SWATHplus software to produce final processed SWATHplus sxp files. Velocity profiles were incorporated into the session file five at a time bracketing (in time) the bathymetric data collected for that line. This ensures that during the time the bathymetry data were collected, sound velocity information closest in time were utilized by the SWATHplus program to correct for variations in sound velocity through the water column, minimizing ray bending effects that can produce erroneous depth soundings. The SWATHplus software applies the pitch, roll, heave, and heading data supplied by the F180R MRU, ensuring that the depth solutions across the swath are compensated for any motion of the SWATHplus transducers due to ship motion.

Software: SWATHplus 3.05.19

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
All the processed SWATHplus sxp files were imported into CARIS HIPS/SIPS software (www.caris.com) using the CARIS HIPS Conversion Wizard. The selected raw data type was SWATHplus. The conversion wizard converts the depths, navigation, and motion data recorded in the sxp files into an internal CARIS HIPS format.

Software: CARIS HIPS/SIPS 6.1

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Using the SWATHplus sxp survey lines that were imported into CARIS, a field sheet and BASE surface were generated in CARIS HIPS that encompassed the field area. The field sheet is in the UTM projection, 19N, central meridian -69.0 degrees west. The horizontal datum was chosen to be the WGS 84 ellipsoid. The extent of the field sheet is (in UTM meters):

East: 366027 West: 373547 North: 4578733 South: 4573363

Software: CARIS HIPS/SIPS 6.1

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
A Bathymetry Associated with Statistical Error (BASE) Surface was generated from the survey line data using the bounds from the field sheet properties. A BASE surface is a georeferenced image of a multi-attributed, weighted-mean surface. A BASE Surface can also contain a visual representation of horizontal and vertical uncertainty. A BASE Surface file is saved with a HNS extension (HIPS Navigation Surface). An XML file with the same name as the BASE Surface is also generated when the Surface is created. This file contains the metadata for the Surface. Base surfaces were generated at a resolution of 10, 5, and 2 meters, and the surface type was set to swath angle. The maximum footprint size in the BASE surface that a sounding was utilized was set to 9 pixels, and the include status for soundings were set to accepted, examined, and outstanding. Additional attributes were set for the surface: Density, mean, and standard deviation.

Software: CARIS HIPS/SIPS 6.1

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Each of the BASE surfaces was interpolated in CARIS HIPS. The interpolation is only applied to areas of no data, and helped to fill in small gaps in the surface. Parameters used for the interpolation were: Matrix size 5X5 pixels, minimum number of neighboring pixels required for interpolation was 6.

Software: CARIS HIPS/SIPS 6.1

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
The final interpolated base surfaces generated in CARIS HIPS was imported into IVS3D's Data Magician (DMagic), a program that is part of the IVS3D Fledermaus suite (www.ivs3d.com). DMagic directly imports the CARIS HNS file described above, and creates a DTM (digital terrain model) and associated geo file for each surface.

Software: IVS DMagic 6.7.0

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
The DTM surfaces created in the Fledermaus Data Magician (DMagic) were converted to a Fledermaus sd file that can be used in the Fledermaus program for three dimensional visualization of the DTM.

Only the highest resolution DTM surface (2-m resolution) was exported from IVS Data Magician as an ArcView Grid (ESRI ASCII grid) .

Software: IVS DMagic 6.7.0

Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2274
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
The 2 meter ESRI ASCII grid was then imported to ArcGIS 9.2 using the ASCII to Raster Tool within ArcToolbox - Conversion Tools - To Raster and output data type defined as float.

The projection of the grids was then defined as UTM, zone 19N, WGS84, using Arc Toolbox, Data Management Tools, Projections and Transformations, Define Projection.

Software: ArcGIS 9.2

Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700x2311
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Process_Step:
Process_Description:
A hillshade was created using the ArcMap Spatial Analyst Extension. Spatial Analyst - Surface Analysis - Hillshade - Azimuth = 45, Altitude = 45, and z factor = 2. The hillshade was saved in ESRI Grid format, as 8-bit, unsigned integer.

Software: ArcGIS 9.2

Source_Used_Citation_Abbreviation: bathy_2m
Process_Date: 2009
Source_Produced_Citation_Abbreviation: bathy_2mh
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700x2311
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Process_Step:
Process_Description:
The hillshade grid was then exported to an ASCII RASTER format using ArcToolbox - Conversion Tools - Raster to ASCII.
Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02536
Country: USA
Contact_Voice_Telephone: 580-548-8700 x2311
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 2672
Column_Count: 3745
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 19
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -69
Latitude_of_Projection_Origin: 0
False_Easting: 500000.000000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 2.000534
Ordinate_Resolution: 2.000534
Planar_Distance_Units: meters
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700x2311
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: WinZip
Format_Version_Number: 9.0
Format_Information_Content:
WinZip file containing hillshade grid (ASCII RASTER) and associated metadata collected by the U.S. Geological Survey off the southern shore of Martha's Vineyard, 2007.
File_Decompression_Technique: Use WinZip or pkUnzip
Transfer_Size: 5 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://pubs.usgs.gov/of/2008/1288/GIS_catalog/Bathy/bathy_2mh.zip>
Access_Instructions: Data can be downloaded via the World Wide Web (WWW)
Fees: none
Technical_Prerequisites:
The grid contained in the zip file is available as an ESRI ASCII grid. To utilize this data, the user must have a GIS software package capable of reading ASCII grids with ESRI headers, or be able to manipulate an ASCII matrix with a geospatial header
Metadata_Reference_Information:
Metadata_Date: 20091004
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700x2311
Contact_Facsimile_Telephone: 5084572310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.8.25 on Sun Oct 04 12:59:14 2009