IRB_BATHYIMG.TIFF: Color GeoTIFF image of the bathymetry of Indian River Bay, Delaware, generated from fathometer data acquired in April 2010 during U.S. Geological Survey Field Activity 2010-006-FA (UTM, Zone 18, WGS 84)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: VeeAnn A. Cross
Publication_Date: 2014
Title:
IRB_BATHYIMG.TIFF: Color GeoTIFF image of the bathymetry of Indian River Bay, Delaware, generated from fathometer data acquired in April 2010 during U.S. Geological Survey Field Activity 2010-006-FA (UTM, Zone 18, WGS 84)
Edition: 1
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2011-1039
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <http://pubs.usgs.gov/of/2011/1039/data/basemap/irb_bathyimg.zip>
Online_Linkage:
<http://pubs.usgs.gov/of/2011/1039/html/ofr2011-1039-catalog.html>
Larger_Work_Citation:
Citation_Information:
Originator: V.A. Cross
Originator: J.F. Bratton
Originator: H.A. Michael
Originator: K.D. Kroeger
Originator: A. Green
Originator: E. Bergeron
Publication_Date: 2014
Title:
Continuous Resistivity Profiling and Seismic-Reflection Data Collected in April 2010 from Indian River Bay, Delaware
Edition: 1
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2011-1039
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2011/1039/>
Online_Linkage: <http://dx.doi.org/10.3133/ofr20111039>
Description:
Abstract:
A geophysical survey to delineate the fresh-saline groundwater interface and associated sub-bottom sedimentary structures beneath Indian River Bay, Delaware, was carried out in April 2010. This included surveying at higher spatial resolution in the vicinity of a study site at Holts Landing, where intensive onshore and offshore studies were subsequently completed. The total length of continuous resistivity profiling (CRP) survey lines was 145 kilometers (km), with 36 km of chirp seismic lines surveyed around the perimeter of the bay. Medium-resolution CRP surveying was performed using a 50-meter streamer in a bay-wide grid. Results of the surveying and data inversion showed the presence of many buried paleochannels beneath Indian River Bay that generally extended perpendicular from the shoreline in areas of modern tributaries, tidal creeks, and marshes. An especially wide and deep paleochannel system was imaged in the southeastern part of the bay near White Creek. Many paleochannels also had high-resistivity anomalies corresponding to low-salinity groundwater plumes associated with them, likely due to the presence of fine-grained estuarine mud and peats in the channel fills that act as submarine confining units. Where present, these units allow plumes of low-salinity groundwater that was recharged onshore to move beyond the shoreline, creating a complex fresh-saline groundwater interface in the subsurface. The properties of this interface are important considerations in construction of accurate coastal groundwater flow models. These models are required to help predict how nutrient-rich groundwater, recharged in agricultural watersheds such as this one, makes its way into coastal bays and impacts surface water quality and estuarine ecosystems. For more information on the survey conducted for this project, see <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-006-FA>.
Purpose:
The purpose of this dataset is to provide a color GeoTIFF image of the tide corrected bathymetric grid for the Indian River Bay in a projected coordinate system (UTM, Zone 18, WGS84).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100412
Ending_Date: 20100415
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -75.207119
East_Bounding_Coordinate: -75.060608
North_Bounding_Coordinate: 38.621180
South_Bounding_Coordinate: 38.565589
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 Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Field Activity Number 2010-006-FA
Theme_Keyword: Info Bank ID K-6-10-DL
Theme_Keyword: bathymetry
Theme_Keyword: Lowrance GPS
Theme_Keyword: GeoTIFF
Theme_Keyword: depth-colored image
Theme_Keyword: TIFF
Theme_Keyword: image
Theme_Keyword: Open-file Report 2011-1039
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: oceans
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: North America
Place_Keyword: North Atlantic Ocean
Place_Keyword: United States
Place_Keyword: Delaware
Place_Keyword: Indian River Bay
Place_Keyword: Indian River Inlet
Place_Keyword: Holts Landing
Place_Keyword: Piney Neck
Place_Keyword: Sussex County
Place_Keyword: Rosedale Beach
Access_Constraints: None.
Use_Constraints:
Not to be used for navigation. The 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: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: <http://pubs.usgs.gov/of/2011/1039/data/basemap/irb_bathyimg.gif>
Browse_Graphic_File_Description:
Thumbnail GIF image showing the color-coded bathymetry in Indian River Bay. The coastline is included for spatial reference.
Browse_Graphic_File_Type: GIF
Native_Data_Set_Environment:
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095
Data_Quality_Information:
Logical_Consistency_Report: All the data were evaluated with the same criteria.
Completeness_Report:
This GeoTIFF image represents all the valid fathometer readings recorded by the HYPACK navigation software, plus some bathymetric readings recorded by the continuous resistivity profile system when the HYPACK system was not logging data.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The navigation system used was a Lowrance 480M with an LGC-2000 Global Positioning System (GPS) antenna. The antenna was located directly above the fathometer transducer mount point.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
All collected bathymetry values were collected by the 200 kHz Lowrance fathometer. The fathometer was mounted starboard side aft, directly below the GPS antenna and the resistivity streamer tow point. The Lowrance manufacturer indicates the speed of sound used by the system to convert to depths is 4800 feet/second. All values are assumed to be accurate to within 1 meter. The gridding, grid smoothing, and other processing affects the accuracy of individual cell values as these data were not collected with the intention of generating a grid and have areas of sparse coverage. This image does not actually have depth values. The colormap of the image is used to indicate depths where red indicates teh shallowest areas. Then moving to deeper water indicated by hellow, greens and darkblue (for the deepest water).
Lineage:
Process_Step:
Process_Description:
Used Mirone version 1.5.0 standalone software to read the binary grid (irb_bathy). Used Image - Color Palettes - Change Palette to choose an appropriate color scale and stetch the bottom of the color range to account for the large amount of shallow data. Then File - Save Image As - GeoTIFF. Output file to irb_bathy.tif and selected the option to preserve image original size. This process step, along with all subsequent process steps, was performed by the same person: VeeAnn A. Cross.
Source_Used_Citation_Abbreviation: irb_bathy
Process_Date: 201103
Source_Produced_Citation_Abbreviation: irb_bathy.tif
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine 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) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description:
Used GeoTIFF Examine to write the header information from the GeoTIFF to a TIFF world file.
Source_Used_Citation_Abbreviation: irb_bathy.tif
Process_Date: 201103
Source_Produced_Citation_Abbreviation: irb_bathy.tfw
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 246
Column_Count: 510
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: 18
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -75.000000
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: 25.000000
Ordinate_Resolution: 25.000000
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
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: National Geodetic Vertical Datum of 1929
Altitude_Resolution: 0.1
Altitude_Distance_Units: meters
Altitude_Encoding_Method: Implicit coordinate
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: irb_bathyimg.tif.vat
Attribute:
Attribute_Label: ObjectID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Value
Attribute:
Attribute_Label: Red
Attribute:
Attribute_Label: Green
Attribute:
Attribute_Label: Blue
Overview_Description:
Entity_and_Attribute_Overview:
This image is based on a bathymetry grid which is in meters in the vertical datum of NGVD29. Based on the NOAA website (<http://www.ngs.noaa.gov/cgi-bin/VERTCON/vert_con.prl> accessed October 2010) the conversion from NGVD29 to NAVD88 is -0.238 meters at both the Indian River Inlet tide station and the Rosedale Beach tide station. This indicates a direct offset of the whole grid will convert to NAVD88. So taking this grid and subtracting 0.238 meters will yield a grid with the vertical datum NAVD88. The colormap in the image uses red to indicate the shallowest areas. Then moving to deeper water - yellow, greens, and dark blue is the deepest.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@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: GeoTIFF
Format_Information_Content:
The WinZip (v. 14) file contains the GeoTIFF image and TIFF world file, as well as the associated metadata files.
Transfer_Size: 0.06 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://pubs.usgs.gov/of/2011/1039/data/basemap/irb_bathyimg.zip>
Network_Resource_Name:
<http://pubs.usgs.gov/of/2011/1039/html/ofr2011-1039-catalog.html>
Network_Resource_Name: <http://dx.doi.org/10.3133/ofr20111039>
Fees: None.
Technical_Prerequisites:
This zip file contains data available in GeoTIFF format with an accompanying TIFF world file. The user must have software capable of uncompressing the zip file and reading/displaying the image.
Metadata_Reference_Information:
Metadata_Date: 20140630
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@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
Generated by mp version 2.9.6 on Mon Jun 30 15:28:41 2014