Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20150126 Title: Single-Beam Bathymetry of the Hurricane Sandy Breach at Fire Island, New York, June 2013 (1-Meter Digital Elevation Model) Geospatial_Data_Presentation_Form: Raster Digital Data Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: 914 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/ds/0914/downloads/20130626_bathy_DEM.zip Description: Abstract: This dataset, 20130626_bathy_DEM.zip, contains a 1-meter (m) grid of June 2013 bathymetry of the breach channel, ebb shoal, and adjacent coast of the Fire Island Wilderness Breach. Scientists from the U.S. Army Corps of Engineers (USACE), in collaboration with the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center (SPCMSC), conducted a bathymetric survey from June 22-26, 2013. The survey focused on a breach (Wilderness Breach) created by Hurricane Sandy near Pelican Island, NY, which is located in Great South Bay. A total of 41 shore-perpendicular transects with a 50-meter spacing were collected using a Knudsen 320BP single-beam echosounder, centered on the breach. Purpose: In October 2012 Hurricane Sandy created a new breach in Fire Island, one of the barrier islands along the southern coast of Long Island, New York. The objective of this study was to create an updated bathymetric map in order to better understand the geomorphological progression of the breach. Supplemental_Information: Data were collected onboard the LARC-5 survey vehicle, which is 10.6 m (35 ft) long, 3 m (10.2 ft) wide and 3.3 m (11 ft) tall. It has a maximum land speed of 40 kph (25 mph) and approximately 11 kph in water, with a typical survey speed of 7 kph. Data were collected during USGS field activity number (FAN) 13CCH06, additional survey details are available at http://cmgds.marine.usgs.gov/fan_info.php?fan=13CCH06. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20130622 Ending_Date: 20130626 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -72.906674728 East_Bounding_Coordinate: -72.881454869 North_Bounding_Coordinate: 40.726625604 South_Bounding_Coordinate: 40.713254033 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:52017943-e691-45ec-a0cc-c4872d344f9e Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificinformation Theme_Keyword: elevation Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: Hurricane Sandy Theme_Keyword: bathymetry Theme_Keyword: inlet Theme_Keyword: breach Theme_Keyword: Real Time Kinematic Global Positioning System Theme_Keyword: single-beam bathymetry Theme_Keyword: single-beam Theme_Keyword: erosion Theme_Keyword: shoreline Theme_Keyword: transect Theme_Keyword: Lighter Amphibious Resupply Cargo Theme_Keyword: LARC-5 Theme_Keyword: HYPACK Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: U.S. Army Corps of Engineers Theme_Keyword: USACE Place: Place_Keyword_Thesaurus: General Place_Keyword: United States of America Place_Keyword: New York Place_Keyword: Wilderness Breach Place_Keyword: Long Island Place_Keyword: Fire Island National Seashore Access_Constraints: None Use_Constraints: These data are not to be used for navigation. The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USACE Field Research Facility Contact_Person: Nick Spore Contact_Position: Research Civil Engineer Contact_Address: Address_Type: Mailing and Physical Address: USACE-CEERD-HF-A Address: Field Research Facility Address: 1261 Duck Road City: Kitty Hawk State_or_Province: NC Postal_Code: 27949-4472 Country: USA Contact_Voice_Telephone: (252) 261-6840 ext 231 Contact_Electronic_Mail_Address: nicholas.j.spore@usace.army.mil Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcCatalog 10.2 (Build 3497) Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: A GPS base station was established on 22 June 2013 by USGS staff and occupied for three consecutive days before submitting the coordinates to the Online Positioning User Service (OPUS) for precise quality control. Logical_Consistency_Report: This dataset was acquired on one research event over the course of 5 days in 2013 and is therefore internally consistent. Forty-one shore-perpendicular transects with a 50-m spacing were acquired using a single-beam echosounder. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The LARC's onboard RTK GPS system computes its location from available transmitting GPS satellites. After it determines its location, the correction from the base station is received and applied to that computed position for a more accurate positioning. An accuracy of +/- 2 m in all three dimensions can thus be achieved. Horizontal Coordinate System: North American Datum 1983 (NAD83), meters Projection: New York State Plane Long Island, meters (3104) Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The Knudsen 320BP echosounder is capable of measuring depths as shallow as 10 cm. The accuracy is determined as three percent of the selectable depth range. The elevations of above water points are based on the height above the ground of the GPS antenna on the LARC. The GPS control monument was located on Fire Island at the National Park Service Visitor Center benchmark, with a latitude of 40 43 58.16252 and a longitude of -72 52 01.04782. Lineage: Process_Step: Process_Description: Single-beam data were collected in the Atlantic Ocean (offshore of Fire Island, NY), through the breached area and in Great South Bay (near Pelican Island, NY) onboard the USACE's LARC-5 amphibious vehicle. The LARC operator used the RTK GPS to follow a pre-defined course of survey lines entered into HYPACK, prior to the start of the survey. The Trimble 4000 RTK GPS software combined with HYPACK 2013 Hydrographic survey software helped ensure the operator stayed on course throughout data acquisition. Process_Date: 2013 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nick Spore Contact_Organization: USACE Field Research Facility Contact_Position: Research Civil Engineer Contact_Address: Address_Type: mailing and physical address Address: USACE-CEERD-HF-A Address: Field Research Facility Address: 1261 Duck Road City: Kitty Hawk State_or_Province: NC Postal_Code: 27949-4472 Country: USA Contact_Voice_Telephone: (252) 261-6840 ext 231 Contact_Electronic_Mail_Address: nicholas.j.spore@usace.army.mil Process_Step: Process_Description: HYPACK software was used to merge the GPS and echosounder data to create text files, in .RAW format, which were later analyzed by the custom-built USACE Field Research Facility FORTRAN software. Conductivity, temperature and depth (CTD) were measured at the beginning of the survey (at the -8m isobath) and at the end of the survey (at the -8m isobath) aboard the LARC to determine the speed of sound in the water column. The time-stamp on the echosounder was corrected for 'drift' using the GPS time clock. The custom FRF software was used to remove the motion of the LARC due to waves and changing tide level. It also adjusted the measurements to changes in the speed of sound over the survey area and correctly aligned the time of the echosounder and the GPS data. This was done by dynamically adjusting the time or latency of the GPS data relative to the echosounder data until a best fit was achieved. Process_Date: 2013 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nick Spore Contact_Organization: USACE Field Research Facility Contact_Position: Research Civil Engineer Contact_Address: Address_Type: mailing and physical address Address: USACE-CEERD-HF-A Address: Field Research Facility Address: 1261 Duck Road City: Kitty Hawk State_or_Province: NC Postal_Code: 27949-4472 Country: USA Contact_Voice_Telephone: (252) 261-6840 ext 231 Contact_Electronic_Mail_Address: nicholas.j.spore@usace.army.mil Process_Step: Process_Description: Land points were separated from points in the water by first computing the average and standard deviation for all GPS elevations collected when the echosounder data indicated that the LARC was floating. Process_Date: 2013 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nick Spore Contact_Organization: USACE Field Research Facility Contact_Position: Research Civil Engineer Contact_Address: Address_Type: mailing and physical address Address: USACE-CEERD-HF-A Address: Field Research Facility Address: 1261 Duck Road City: Kitty Hawk State_or_Province: NC Postal_Code: 27949-4472 Country: USA Contact_Voice_Telephone: (252) 261-6840 ext 231 Contact_Electronic_Mail_Address: nicholas.j.spore@usace.army.mil Process_Step: Process_Description: Post-processed topographic-bathymetric data from USACE were importedinto ArcGIS 10.2.1, converted to a NAD 1983 UTM Zone 18N coordinate system, saved as a point shapefile and used to create a trackline map of the single-beam point data coverage. Errant data points were manually removed from the data. The edited trackline data were exported from ArcGIS into a text file as well as being used to create a 32 bit raster grid and calculate vertical RMSE; the grid was computed using a natural neighbors gridding algorithm with a 1-m grid cell. The raster grid was also used to generate a color-contoured image of the breach. Process_Date: 2014 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Andrew T Brownell Contact_Organization: U.S. Geological Survey, SOUTHEAST REGION Contact_Position: Research Assistant Contact_Address: Address_Type: Mailing and Physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8097 Contact_Electronic_Mail_Address: abrownell@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20201013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road 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 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 1435 Column_Count: 2097 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: 0.9996 Longitude_of_Central_Meridian: -75.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 1.0 Ordinate_Resolution: 1.0 Planar_Distance_Units: Meter Geodetic_Model: Horizontal_Datum_Name: D_North_American_1983 Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 20130626_bathy_DEM Entity_Type_Definition: Esri 32 bit floating point raster grid created from outputs of USACE post-processing program; edited in ArcGIS to remove certain errant data points. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Value Attribute_Definition: Unknown Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -8.8202657699585 Range_Domain_Maximum: 3.50691652297974 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, SOUTHEAST REGION Contact_Person: Cheryl J Hapke Contact_Position: Research Geologist Contact_Address: Address_Type: Mailing and Physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8000 Contact_Facsimile_Telephone: 727-502-8001 Contact_Electronic_Mail_Address: chapke@usgs.gov Distribution_Liability: This publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: DEM (Digital Elevation Model format [U.S. Geological Survey]) Format_Information_Content: The data were created with Environmental Systems Research Institute (Esri) ArcGIS version 10.2.1. Shapefiles may also be viewed with other versions of ArcView, ArcGIS, or the free ArcExplorer (http://www.esri.com/software/arcexplorer/index.html). The ArcGIS shapefile of the trackline data is in the folder labeled: 20130620_bathy_points The text file of the trackline data is labeled: 20130626_bathy_xyz The raster grid is the folder labeled: 20130626_bathy_DEM File_Decompression_Technique: Unzip Transfer_Size: 6.58 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/0914/downloads/20130626_bathy_DEM.zip Fees: None, if obtained online. Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Arnell Forde Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: Mailing and Physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8000 Contact_Facsimile_Telephone: 727-502-8002 Contact_Electronic_Mail_Address: aforde@usgs.gov Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_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, St Petersburg Coastal and Marine Science Center as the originator of these data in future products or derivative research.