CABATH5M - 5 meter ArcRaster Bathymetric grid of both the inshore and offshore area of Cape Ann - Salisbury Beach Survey Area.

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2008
Title:
CABATH5M - 5 meter ArcRaster Bathymetric grid of both the inshore and offshore area of Cape Ann - Salisbury Beach Survey Area.
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2007-1373
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage:
<https://pubs.usgs.gov/of/2007/1373/GIS/raster/bathymetry/cabath5m.zip>
Larger_Work_Citation:
Citation_Information:
Originator: Walter A. Barnhardt
Originator: Brian D. Andrews
Originator: Seth D. Ackerman
Originator: Wayne E. Baldwin
Originator: Christopher J. Hein
Publication_Date: 2008
Title:
High-Resolution Geological Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts.
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2007-1373
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2007/1373/>
Description:
Abstract:
These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center. Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of sea-floor geology are important first steps toward protecting fish habitat, delineating marine reserves, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters (5-30m deep) of Massachusetts between the New Hampshire border and Cape Cod Bay.

Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports<http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html>. This spatial dataset is from the Cape Ann and Salisbury Beach Massachusetts project area. They were collected in two separate surveys in 2004 and 2005 and cover approximately 325 square kilometers of the inner continental shelf. High resolution bathymetry and backscatter intensity were collected in 2004 and 2005. Seismic profile data, sediment samples and bottom photography were also collected in 2005.

Purpose:
The purpose of this grid is to provide a merged bathymetric dataset of the nearshore and offshore survey areas that covers 100 percent of the seafloor inside the Cape Ann to Salisbury Beach survey areas.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20040223, 20050908
Ending_Date: 20040316, 20050916
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.823419
East_Bounding_Coordinate: -70.544036
North_Bounding_Coordinate: 42.900113
South_Bounding_Coordinate: 42.660349
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Bathymetry
Theme_Keyword: Seafloor
Theme_Keyword: Marine Geology
Theme_Keyword: Swath Bathymetry
Theme_Keyword: Interferometric Sonar
Theme_Keyword: ArcGIS Raster
Theme_Keyword: field activity serial number 05005
Theme_Keyword: field activity serial number 04015
Theme_Keyword: RESON 8101
Theme_Keyword: Science Applications International Corporation
Theme_Keyword: SEA SwathPlus
Theme_Keyword: R/V OceanExplorer
Theme_Keyword: R/V Connecticut
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: geoscientificInformation
Theme_Keyword: elevation
Theme_Keyword: imageryBaseMapsEarthCover
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: Gulf of Maine
Place_Keyword: Bigelow Bight
Place_Keyword: Merrimack River
Place_Keyword: Ipswich Bay
Place_Keyword: Massachusetts
Place_Keyword: Cape Ann
Place_Keyword: Salisbury Beach
Place_Keyword: Plum Island
Stratum:
Stratum_Keyword_Thesaurus: General
Stratum_Keyword: Seafloor
Temporal:
Temporal_Keyword_Thesaurus: General
Temporal_Keyword: 2004
Temporal_Keyword: 2005
Access_Constraints: None
Use_Constraints:
Data are not intended for navigational use. The intended scale of these data is 1:25,000. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
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: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: <https://pubs.usgs.gov/of/2007/1373/GIS/browse_jpg/cabath5m.jpg>
Browse_Graphic_File_Description: black and white thumbnail image of bathymetry
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.6.1500
Cross_Reference:
Citation_Information:
Originator: Walter A. Barnhardt
Originator: Brian D. Andrews
Originator: Bradford Butman
Publication_Date: 2006
Title:
High-Resolution Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1293
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2005/1293/>
Cross_Reference:
Citation_Information:
Originator: Seth D. Ackerman
Originator: Bradford Butman
Originator: Walter A. Barnhardt
Originator: William W. Danforth
Originator: James M. Crocker
Publication_Date: 2006
Title:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2006-1008
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2006/1008/>
Data_Quality_Information:
Completeness_Report:
Survey lines run for cross line junction analysis are not included in this grid.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The horizontal accuracy of this merged grid varies, based on the accuracy of the input grids. The data in "bath_is5m" was collected using a Real-Time Kinematic GPS signal from a USGS base station established for the survey. The data in "bath_os5m" was collected using the Differential Global Positioning System signal from the U.S. Coast Guard.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The mean depth differences between nearshore (USGS) survey and the offshore (SAIC) data is 0.24 meters. The data from the two surveys overlap 150-200 meters along there common boundary. In the area of overlap, the offshore data is 0.24 meters (mean) shallower. These differences can be can be attributed to the use of differing tidal models for the two surveys. SAIC utilized a zoned tidal model provided by NOAA, whereas the USGS used kinematic water level heights recorded in real time aboard the R/V Connecticut A zoned tidal model is based on a compilation of historical water level heights, which take into account extreme highs and lows, and is generally very accurate. However, water level heights at the time of data collection are influenced by local wind and wave setup conditions that are not taken into account by the zoned tidal model. The kinematic water level heights recorded by the USGS aboard the R/V Connecticut reflect these local variations due to wind and wave setup and thus could account for the observed differences in the bathymetric surfaces generated by SAIC and the USGS.
Lineage:
Process_Step:
Process_Description:
Filled in the small gaps between adjacent lines in the near shore survey area (bath_is5m) using several steps outlined below:

1) Calculated new grid by selecting all areas in bath_is5m with a depth less than 14m deep using ESRI ArcInfo Workstation (ver 9.2 ) Grid Module Syntax= EXT14M = select((bath5mfinal), 'value > -14')

2) Converted the temporary grid of depth less than 14 meters to a point feature class using the "Raster to Point" tool (ArcGIS ArcToolbox ver. 9.2).

3) Create empty TIN using "Create TIN" tool, then add x,y,z point feature class using the "Edit TIN" tool (ArcGIS ArcToolbox ver. 9.2). Creating a TIN from the points filled in the gaps between lines.

4) Created a polygon feature class to use as a hard clip boundary and then added to the TIN with the "Edit TIN" Tool (ArcGIS ArcToolbox ver. 9.2).

5) Converted the TIN back to a 10 meter resolution grid (nn10mfil) using "Tin to Raster" Tool (ArcGIS ArcToolbox ver 9.2) using the natural neighbors and 10 m cell size option. A 10m cell size was used to further smooth the data.

6) Mosaicked the 5m inshore grid (bath_is5m with gaps) with the 10m inshore grid (<14m with no gaps) into a new 5m grid (bath_is5mInt) covering the near shore survey area. Used the "Mosaic To New Raster" tool (ArcGIS ArcToolbox ver. 9.2) with the following parameters: Input Rasters: nn10mfil, bath_is5m Output Raster: is5m_merge Cellsize: 5

Mosaic Method: First- This option means the output cell value of the overlapping areas will be the value from the first raster in the list (bath_is5m). Where the two grids do not overlap (the gaps) the nn10mfil values we used.

Source_Used_Citation_Abbreviation: bath_is5m (this publication)
Process_Date: 200804
Source_Produced_Citation_Abbreviation: bath_is5mInt. (temporary grid)
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
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: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@usgs.gov
Process_Step:
Process_Description:
Depths in the areas of overlap between the nearshore and offshore data were compared prior to mosaicking the two together. The summary statistics for the area of overlap:

Count: 131,668 Min: -4.23 meters Max 2.77 meters Mean: -0.24 meters Standard Deviation: 0.177 meters

The offshore data (SAIC RESON 8101) is 0.24 meters shallower than the USGS inshore data. A correction factor of 0.24 meters was added to the inshore data so that the mosaicked bathymetric grid would not have a big depth difference along the area of overlap.

Source_Used_Citation_Abbreviation: bath_is5m (this publication)
Process_Date: 200804
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
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: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@usgs.gov
Process_Step:
Process_Description:
Mosaicked the inshore bathymetry (bath_is5mInt with no gaps) with the offshore bathymetry (bath_os5m) to create a continuous regional bathymetric surface (cabath_5m) covering both survey areas. Used the "Mosaic To New Raster" tool (ArcGIS ArcToolbox ver 9.2). The mosaic method used the "Last" option so that in the area of overlap the new grid used the last raster in the list (bath_os5m).
Source_Used_Citation_Abbreviation: bath_is5m (this publication)
Source_Used_Citation_Abbreviation: bath_os5m (this publication)
Process_Date: 200804
Source_Produced_Citation_Abbreviation: cabath_5m (this publication)
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
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: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 5238
Column_Count: 4468
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: -69.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 5.000000
Ordinate_Resolution: 5.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: value
Entity_Type_Definition: Depth in meters below mean lower low water
Entity_Type_Definition_Source: ESRI
Attribute:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -2.9
Range_Domain_Maximum: -91.37
Attribute_Units_of_Measure: meters
Overview_Description:
Entity_and_Attribute_Overview:
Data depth values represent depth in meters referenced to mean lower low water (MLLW).
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey, Woods Hole Science Center
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2348
Contact_Electronic_Mail_Address: bandrews@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: ESRI Grid
Format_Version_Number: ArcGIS 9.2
Format_Specification: ESRI Raster GRID format
Format_Information_Content:
WinZip file containing the ArcRaster grid of swath bathymetric data collected in the Cape Ann to Salisbury Beach Survey Area.
File_Decompression_Technique: no compression applied
Transfer_Size: 92.370
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://pubs.usgs.gov/of/2007/1373/GIS/raster/bathymetry/cabath5m.zip>
Access_Instructions: Data can be downloaded via the World Wide Web (WWW)
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.75
Recording_Density_Units: Gbytes
Recording_Format: UDF
Compatibility_Information: None
Fees: none
Technical_Prerequisites:
These data are available as a ArcInfo 32-bit floating point binary grid in Environmental Systems Research Institute (ESRI) format. The grid consists of two folders, one with the "grid name", and one "info" folder. The two folders for each grid are compressed into one file using WinZip (ver. 9.0) software. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an ESRI ArcRaster grid. The two folders for each grid must be uncompressed to the same folder. If during the process of extracting multiple grids in WinZip format to the same folder, the user is prompted by WinZip software to "overwrite existing files" in the info folder select the "yes" option.
Metadata_Reference_Information:
Metadata_Date: 20090106
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
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: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@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_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Lineage:
Generated by mp version 2.8.25 on Thu Jan 08 09:07:37 2009