Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2018 Title: Seismic Reflection, Geometrics multi-channel streamer common midpoint navigation, USGS field activity 2017-003-FA, Mississippi River Delta front offshore of southeastern Louisiana (CSV text and Esri point shapefile, GCS WGS 84) Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F7X929K6 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.5066/F7X929K6 Online_Linkage: https://www.sciencebase.gov/catalog/item/5a9593c9e4b06990606a7df5 Larger_Work_Citation: Citation_Information: Originator: Wayne E. Baldwin Originator: Seth D. Ackerman Originator: Charles R. Worley Originator: William W. Danforth Originator: Jason D. Chaytor Publication_Date: 2018 Title: High-resolution geophysical data collected along the Mississippi River Delta front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2017-003-FA Edition: 1.0 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F7X929K6 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Baldwin, W.E., Ackerman, S.D., Worley, C.R., Danforth, W.W., and Chaytor, J.D, 2018, High-resolution geophysical data collected along the Mississippi River Delta front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2017-003-FA: U.S. Geological Survey data release, https://doi.org/10.5066/F7X929K6. Online_Linkage: https://doi.org/10.5066/F7X929K6 Online_Linkage: https://www.sciencebase.gov/catalog/item/5a8c4bcbe4b00f54eb44044c Description: Abstract: High resolution bathymetric, sea-floor backscatter, and seismic-reflection data were collected offshore of southeastern Louisiana aboard the research vessel Point Sur on May 19-26, 2017, in an effort to characterize mudflow hazards on the Mississippi River Delta front. As the initial field program of a research cooperative between the U.S. Geological Survey, the Bureau of Ocean Energy Management, and other Federal and academic partners, the primary objective of this cruise was to assess the suitability of sea-floor mapping and shallow subsurface imaging tools in the challenging environmental conditions found across delta fronts (for example, variably distributed water column stratification and widespread biogenic gas in the shallow subsurface). Approximately 675 kilometers (km) of multibeam bathymetry and backscatter data, 420 km of towed chirp data, and 550 km of multichannel seismic data were collected. Varied mudflow (gully, lobe), prodelta morphologies, and structural features were imaged in selected survey areas from Pass a Loutre to Southwest Pass. Purpose: This dataset contains common midpoint navigation for approximately 550 km of multi-channel streamer seismic-reflection profiles collected by the U.S. Geological Survey during cruise 2017-003-FA along theMississippi River Delta front offshore of southeastern Louisiana. This information allows for spatial correlation of brute stack seismic-reflection profiles images with other geophysical and sample data for investigating sea-floor morphology and geologic framework in the area. Supplemental_Information: Additional information on the field activity is available from https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-003-FA. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20170521 Ending_Date: 20170526 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -89.552178 East_Bounding_Coordinate: -88.881535 North_Bounding_Coordinate: 29.161339 South_Bounding_Coordinate: 28.781718 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5a9593c9e4b06990606a7df5 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Bureau of Ocean Energy Management Theme_Keyword: BOEM Theme_Keyword: field activity number 2017-003-FA Theme_Keyword: shapefile Theme_Keyword: common midpoint navigation Theme_Keyword: seismic navigation Theme_Keyword: seismic reflection Theme_Keyword: seismic profile Theme_Keyword: boomer Theme_Keyword: Applied Acoustics Theme_Keyword: S-boom Theme_Keyword: sparker Theme_Keyword: SIG Theme_Keyword: multi-channel streamer Theme_Keyword: Geometrics Theme_Keyword: GeoEel Theme_Keyword: Marine Geology Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: location Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: seismic reflection methods Theme_Keyword: marine geophysics Theme_Keyword: marine geology Theme_Keyword: navigational data Place: Place_Keyword_Thesaurus: None Place_Keyword: Gulf of Mexico Place_Keyword: Southeast Louisiana Place_Keyword: Mississippi River Delta front Place_Keyword: Southwest Pass Place_Keyword: South Pass Place_Keyword: Pass a Loutre Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: sea floor Stratum_Keyword: seafloor Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: 2017 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_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Wayne E. Baldwin Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: Massachusetts Postal_Code: 02543-1598 Country: US Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/5a9593c9e4b06990606a7df5/?name=2017-003-FA_MCS_100cmp_browse.jpg Browse_Graphic_File_Description: Thumbnail image of multi-channel seismic-reflection common midpoint locations from the Mississippi River Delta front offshore of southeastern Louisiana. Browse_Graphic_File_Type: JPEG Data_Quality_Information: Logical_Consistency_Report: Multichannel seismic-reflection profile data were collected continuously throughout the cruise except during a survey hiatus between 19:19 (UTC) 5/21/2017 (JD141) and 02:17 5/22/2017 (JD142), a period of inclement weather, rough sea state, and system malfunction between 10:45 5/23/17 (JD 143) and 00:20 5/24/17 (JD144), and within Louisiana state waters, where the cruise was not permitted to use the seismic sources. Sparker and boomer sources were used with the multichannel streamer during the cruise to test their relative effectiveness in the delta front setting, and some lines were reoccupied with each source to provide comparative results over common sections of sea floor. Substantial flux of freshwater from the Mississippi River caused rather low at several locations during the cruise, which reduced the effectiveness of the sparker source, which is predicated on operation in sea water conditions. During these periods, the boomer source was deployed instead. Line numbering begins at FA2017003_transit4 and ends at FA2017003_bonus3. This feature class contains common midpoint (CMP) locations for each trackline, at the start (1000 or 1600), end (x), and even 100-CMP intervals in between. The CSV file contains unique CMP navigation. No duplicates exist. The attribute field 'imagename' lists the PNG brute stack image that corresponds to each line (see MCS.zip folder accompanying 2017-003-FA_MCS_Images_meta.xml available from the larger work citation). Completeness_Report: Sections of tracklines where navigation was recorded but no seismic data were logged are not included such as some turns and transits (e.g. FA2017003_sw13a, from which the CMPs prior to 1600 are not included because many of the raw traces contain no data). There are no lines FA2017003_transit1, FA2017003_transit2, FA2017003_transit3, or FA2017003_dw13. Troubleshooting of the seismic power source during line FA2017003_sw9 caused shots 3003 - 4343 to not be logged. As a result, there is a gap in the CMP navigation for FA2017003_sw9 (see 2017-003-FA_MCS_cmp-nav.csv), as well as a conspicuous artifact in the form of an abrupt vertical sea floor offset in the PNG brute stack image corresponding to those CMPs (contained in the MCS.zip folder accompanying 2017-003-FA_MCS_Images_meta.xml available from the larger work citation). Similarly, the power source was briefly suspended and restarted during line FA2017003_sw25 causing shots 1014 - 1146 to not be logged. While the resulting gap is evident in the CMP navigation, the effect is less conspicuous in the PNG brute stack image. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Multichannel seismic-reflection data were navigated using a Wide Area Augmentation System (WAAS) enabled Hemisphere Differential GPS (DGPS) receiver, with an antenna mounted on an 01 deck port side rail 7.35 m from the stern of the R/V Point Sur. The seismic sources were towed from the center of the stern approximately 17 m (lines FA2017003_transit4 - FA2017003_sw8) and 22 m (lines FA2017003_sw9 - FA2017003_bonus3) aft and approximately 4 m starboard of the DGPS antenna. The 150-m long GeoEel 32-channel (50 m active section) streamer was towed approximately 3 m outboard of the port side of the vessel from a boom crane, with the center of the first and last active groups approximately 73 m and 123 m aft of the DGPS antenna, respectively. The Geometrics CNT-1 seismic acquisition software (version 5.361) logged the shot navigation coordinates to the to the SEG-D external header. Layback distance between the GPS antenna and the acoustic source and receivers were calculated in post processing (described in the processing steps). Although horizontal accuracy of WAAS enabled DGPS is estimated to be within 2 m, the actual accuracy is assumed to be coarser due to the additional uncertainty added from calculation of source/receiver layback and common midpoint positions. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unpublished Material Title: MCS reflection point data Geospatial_Data_Presentation_Form: digital data Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20170521 Ending_Date: 20170526 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: raw MCS data Source_Contribution: Multichannel seismic-reflection data were shot using Applied Acoustics S-Boom or SIG mini sparker (ELC 1050 and 1200) sources powered by Applied Acoustics CSP-D (700 and 2400) power supplies. Both sparker and boomer sources were used to test their relative effectiveness in the delta front setting, and some lines were reoccupied with each source to provide comparative results over common sections of sea floor. Shots were recorded using a 150-m long 32-channel (50 m active section) solid-state Geometrics GeoEel streamer with 1.5625-m spaced groups connected to a Geometrics Streamer Power Supply Unit (SPSU). The seismic sources were towed from the center of the stern approximately 17 m (lines FA2017003_transit4 - FA2017003_sw8) and 22 m (lines FA2017003_sw9 - FA2017003_bonus3) aft and approximately 4 m starboard of the DGPS antenna, and the GeoEel streamer was towed approximately 3 m outboard of the port side of the vessel from a boom crane, with the center of the first and last active groups approximately 73 and 123 meters aft of the DGPS antenna, respectively. The S-Boom source was powered at 600 joules (200 J per plate) and deployed from the start of surveying up to 19:19 (UTC) 5/21/2017 (JD141), between 02:17 and 15:31 5/22/2017 (JD142), and between 20:06 5/22/2017 (JD142) and 10:08 5/23/2017 (JD143). SIG mini sparker sources were supplied between 200 and 500 joules and deployed between 15:31 and 20:04 5/22/2017 (JD142), and between 00:20 5/24/2017 (JD144) and 00:44 5/26/2017 (JD146). Geometrics CNT-1 seismic acquisition software (version 5.361) running on a Windows PC was used to control the multichannel system and digitally log traces in the Geometrics SEG-D format, and record GPS navigation coordinates to the SEG-D external headers. Data were acquired at shot rates of 0.5 and 1 s, record lengths between 400 and 800 milliseconds (ms), and a sample interval of 0.25 ms. Process_Step: Process_Description: A SIOSEIS (version 2015.3.1) seismic processing software script (sio_segd2segy) was used to read Geometrics SEG-D formatted (SIOSEIS process SEGDDIN) traces and write them (SIOSEIS process DISKOX) to SEG-Y Rev. 1 format (IEEE floating point) for each line. This process step and all subsequent process steps were conducted by the same person - Wayne Baldwin. Process_Date: 201705 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Wayne E. Baldwin Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700 x2226 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: OpenCPS (version 3.3.0) seismic processing software was used to perform the following series of processing flows: 1. read_segy.flow - SegyTapeRead read the traces. HeaderMath and UTMLatLong were used to convert the source lat/lon positions from seconds of arc to decimal degrees, project them to UTM Zone 16N WGS 84 meters, and write each to new header words (NRP_LAT, NRP_LON, NRP_X, and NRP_Y). DBWrite wrote the UTM positions for the first channel of each FFID to an internal OpenCPS database table. Finally, Output wrote the traces to a new file "*.sht-raw.seis" in the internal OpenCPS format. 2. geom.flow - Input read the "*.sht-raw.seis" file and sorted the traces to FFID/CHANNEL. The custom Python module ShotlineLayback (developed by Nathan Miller of USGS-WHCMSC) was used to define the source shot and streamer geometry based on measured horizontal offsets from the DGPS antenna to the source (-17.35 or -22.35) and the centers of the first (1) and last (32) channel groups (-73.43/-112.8) of the active streamer section. The algorithm interpolated a sail line from the source shot positions (NRP_X and NRP_Y), then computed layback positions for the source shot and 32 channel groups for each FFID by translating them back along the sail line by their respective measured offsets. Midpoint positions along the sail line were also computed for each shot/receiver pair, allowing the traces to be binned by common midpoints (CMPs) spaced evenly (by 0.781 m) along the sail line. Output wrote the traces to a new file "*.sht-raw_geom.seis" in which the trace header words SRC_X, SRC_Y, REC_X, REC_Y, MPT_X, MPT_Y, BIN_X, BIN_Y, and OFFSET were populated to reflect the layback Source X and Y, layback Receiver X and Y, layback Source/Receiver Midpoint X and Y, and CMP BIN X and Y positions, as well as the offset value (computed by sqrt((REC_X - SRC_X) * (REC_X - SRC_X) + (REC_Y - SRC_Y) * (REC_Y - SRC_Y))) for each trace in the resulting CMPs. *A limitation of the ShotlineLayback module is the inability to layback source shot/receiver locations that would have occurred prior to the start of the interpolated sail line (i.e. it does not project the sail line backward). This results in erroneous computation of those shot/receiver locations and their respective midpoints, making them unable to be stacked by bin location in the subsequent step. Consequently, up to 40 dead traces exist at the start of each common midpoint stack profile.* 3. brute_stack.flow - Input read the "*.sht-raw_geom.seis" file and sorted the traces to CMP/OFFSET. The Python module Butterworth applied an Obspy version (modified from Scipy version 0.17.1) of a zero-phase, four corner Butterworth bandpass filter to the traces, between 450 and 1800 Hz for data shot with the S-Boom, or between 350 and 1400 Hz for those shot with the mini sparker. NormalMoveout applied a travel time correction to each trace based on offset and a constant velocity of 1530 m/s (water column sound speed), as well as a 60 percent stretch mute with a 30 ms taper. Stack summed the traces within each CMP, computed the average amplitude for each trace sample, and wrote the computed samples to a single CMP trace, as well as averaging the Midpoint positions of the input traces and updating the header words MPT_X and MPT_Y with the resulting averaged values. Output wrote the stacked traces to a new file "*.stk-brute.seis" in the internal OpenCPS format. 4. geom2geojson.flow - Input read the "*.stk-brute.seis" file and sorted the traces to CMP. The custom Python module Header2GeoJSON (developed by Nathan Miller of USGS-WHCMSC) exported the stacked trace navigation (using coordinates from the BIN_X and BIN_Y headers) as point features in the GeoJSON format. Attributes for CMP, BIN_X, BIN_Y, linename, surveyid, vehicleid, and deviceid were also included in the GeoJSON output. Process_Date: 201711 Process_Step: Process_Description: A batch shell script, MCSGeojson2SQL, was executed on the output GeoJSON file from the previous step. First, ogr2ogr (version 2.1.1) was used to import the GeoJSON formatted CMP navigation point geometries into a Spatialite (version 4.3.0) enabled SQLite (version 3.21.0) database table, and in the process add fields for the coordinates converted from UTM Zone 16N WGS 84 meters to GCS WGS 84 decimal degrees. Second, GJpts2lines.py created two new database tables, one containing line geometries generated from the CMP point navigation (with sort order defined by the linename and CMP fields), and another containing CMP navigation filtered to maintain the first and last CMPs, and CMPs at multiples of 100. Process_Date: 201711 Process_Step: Process_Description: The MCS first, last, and multiple of 100 CMP features were added (Add Data) into ArcGIS desktop (version 10.3.1) from the SQLite database, and then exported (Right click on database feature class > Data > Export Data) to the new Esri point shapefile 2017-003-FA_MCS_100cmp. Process_Date: 201712 Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20200807 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: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 7132 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees 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: 2017-003-FA_MCS_100cmp Entity_Type_Definition: Multichannel seismic-reflection common midpoint locations for survey 2017-003-FA along the Mississippi River Delta front. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: FID 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: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: bin_x Attribute_Definition: Easting coordinate in UTM Zone 16 N meters, WGS 84 Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 251046.09 Range_Domain_Maximum: 316989.33 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: bin_y Attribute_Definition: Northing coordinate in UTM Zone 16 N meters, WGS 84 Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3185620.26 Range_Domain_Maximum: 3227334.75 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: lon Attribute_Definition: Longitude coordinate in decimal degrees, WGS 84 Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -89.552178 Range_Domain_Maximum: -88.881535 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: lat Attribute_Definition: Latitude coordinate in decimal degrees, WGS 84 Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 28.781718 Range_Domain_Maximum: 29.161339 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: linename Attribute_Definition: Name of the trackline along which MCS data were collected in the format: survey ID (i.e. 2017003FA_) + file name (i.e. transit4). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character set Attribute: Attribute_Label: imagename Attribute_Definition: Name of the PNG image file associated with the MCS survey line. The appended '.stk-brute' in the file name indicates that that the image represents a constant velocity, common midpoint stack version of the multi-channel seismic data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character set Attribute: Attribute_Label: cmp Attribute_Definition: Common midpoint number (values are first, last, and every 100 CMPs between). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1000 Range_Domain_Maximum: 45122 Attribute_Units_of_Measure: common midpoint Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: year Attribute_Definition: Year the survey was conducted (YYYY). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2017 Range_Domain_Maximum: 2017 Attribute_Units_of_Measure: year Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: surveyid Attribute_Definition: WHCMSC field activity identifier (e.g. "2017-003-FA" where 2017 is the survey year, 003 is survey number of that year, and FA is Field Activity). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character set Attribute: Attribute_Label: vehicleid Attribute_Definition: Survey vessel name. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character set Attribute: Attribute_Label: deviceid Attribute_Definition: Sonar device used to collect MCS data in the format: source (AA S-Boom or SIG mini sparker)/receiver (GeoEel). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character set Overview_Description: Entity_and_Attribute_Overview: The CMP locations can be hyperlinked to the PNG brute stack seismic-reflection image corresponding to line name in a GIS (see the 2017-003-FA_MCS_Images.zip archive accompanying 2017-003-FA_MCS_Images_meta.xml available from the larger work citation). The fist, last, and multiple of 100 common midpoint features in "2017-003-FA_MCS_100cmp.shp" correspond to the x-axis ticks on the PNG images. The unique common midpoint CSV file has the following column headings: bin_x, bin_y, lon, lat, linename, cmp, year, surveyid, vehicleid, and deviceid. All columns correspond to the attributes of the shapefile, except "imagename" and the shapefile specific attributes. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical address Address: Federal Center Address: Building 810 Address: Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Resource_Description: USGS data release 2017-003-FA MCS data from the Mississippi River Delta front area: includes the shapefile 2017-003-FA_MCS_100cmp.shp, the browse graphic 2017-003-FA_MCS_100cmp_browse.jpg, a CSV file of common midpoint locations (2017-003-FA_MCS_cmp-nav.csv), and the Federal Geographic Data Committee (FGDC) Content Standards for Digital Geospatial Metadata (CSDGM) metadata file 2017-003-FA_MCS_100cmp_meta.xml. 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: Shapefile Format_Version_Number: ArcMap 10.3.1 Format_Specification: Shapefile Format_Information_Content: Shapefile of MCS common midpoint locations collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center along the Mississippi River Delta front and the associated metadata. File_Decompression_Technique: none Transfer_Size: 9.5 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5a9593c9e4b06990606a7df5 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5a9593c9e4b06990606a7df5 Network_Resource_Name: https://doi.org/10.5066/F7X929K6 Access_Instructions: The first link is to the page containing the data, the second link downloads all data available from the page as a zip file, and the third link is to the publication landing page. Digital_Form: Digital_Transfer_Information: Format_Name: CSV Format_Version_Number: None Format_Specification: Comma-Separated Values (CSV) Format_Information_Content: CSV file of MCS common midpoint locations locations collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center along the along the Mississippi River Delta front and the associated metadata. File_Decompression_Technique: none Transfer_Size: 82 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5a9593c9e4b06990606a7df5 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5a9593c9e4b06990606a7df5 Network_Resource_Name: https://doi.org/10.5066/F7X929K6 Access_Instructions: The first link is to the page containing the data, the second link downloads all data available from the page as a zip file, and the third link is to the publication landing page. Digital_Form: Digital_Transfer_Information: Format_Name: WFS Format_Information_Content: Shapefile 2017-003-FA_MCS_100cmp.shp provided through a WFS (web feature service). Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/5a9593c9e4b06990606a7df5?service=wfs&request=getcapabilities&version=1.0.0 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5a9593c9e4b06990606a7df5 Network_Resource_Name: https://doi.org/10.5066/F7X929K6 Access_Instructions: The first link in the network resources accesses the data through a feature service, the second is to the page containing the data, and the third link is to the publication landing page. Digital_Form: Digital_Transfer_Information: Format_Name: WMS Format_Information_Content: Shapefile 2017-003-FA_MCS_100cmp.shp provided through a WMS (web mapping service). Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/5a9593c9e4b06990606a7df5?service=wms&request=getcapabilities&version=1.3.0 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5a9593c9e4b06990606a7df5 Network_Resource_Name: https://doi.org/10.5066/F7X929K6 Access_Instructions: The first link in the network resources accesses the data through a mapping service, the second is to the page containing the data, and the third link is to the publication landing page. Fees: none Technical_Prerequisites: To utilize these data, the user must have software capable of reading shapefile format, or GIS software capable of utilizing web mapping or feature services. The CSV file can be read with a text editor. Metadata_Reference_Information: Metadata_Date: 20200807 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Wayne E. Baldwin Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700 x2226 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time