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These data are high-resolution bathymetric measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of sidescan sonar and bathymetric data...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: September 10, 2026 at 08:09 PM -
These data are high-resolution acoustic backscatter measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of sidescan sonar data were...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: September 10, 2026 at 10:10 PM -
This data is a qualitatively-derived interpretative polygon shapefile defining the bottom types of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 08:33 PM -
This geospatial data set contains an interpolated 3-D surface or, triangulated-irregular network (TIN), of the change in elevation, in feet, of the substrate between cross-sections 22 and 35...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 29, 2026 at 02:18 AM -
This geospatial data set contains the points collected by the echosounder on transects in the upstream project reach surrounding the construction area at River Mile 769.8 below Gavins Point Dam...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: September 29, 2026 at 01:23 AM -
This data set includes the locations and hotlinks to photographs of the seafloor in Boston Harbor and the harbor approaches, Massachusetts. The photos were taken using the mini-SEABOSS system...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 10:05 PM -
This data set includes the locations, identifiers, grain-size data and(or) textural descriptions of surficial sediments collected at stations based on topographic and backscatter data of the...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 10:43 PM -
This data set contains land surface elevations on dry and wadeable portions of transects for the hydrographic surveys on the Missouri River below Gavins Point Dam near River Mile 769.8. This...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 29, 2026 at 01:43 AM -
In order to test hypotheses about groundwater flow under and into Chesapeake Bay, geophysical surveys were conducted by U.S. Geological Survey (USGS) scientists on Chesapeake Bay and the Potomac...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:47 PM -
Repeat sedimentation surveys are a valuable tool for water managers and are part of sediment management plans, which are required by FAC02-01. Efficient data collection and processing will save...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:22 PM -
An Innerspace 456 single-beam echosounder in conjunction with a Trimble® differential Global Positioning System (DGPS), HYPACK® navigation software, and Ashtech Z-Xtreme and Trimble® R8 Global...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 17, 2026 at 12:40 AM -
An Innerspace 456 single-beam echosounder in conjunction with a Trimble® differential Global Positioning System (DGPS), HYPACK® navigation software, and Ashtech Z-Xtreme and Trimble® R8 Global...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 10:40 PM -
This geospatial data set contains an interpolated 3-D surface or, triangulated-irregular network (TIN), of the substrate surface between cross-sections 22 and 35 following construction of...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 29, 2026 at 01:45 AM -
This geospatial data set contains an interpolated 3-D surface or, triangulated-irregular network (TIN), of the substrate surface between cross-sections 23 and 39 following construction of...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 29, 2026 at 02:16 AM -
This item contains area-capacity and surface processing times for S&T Project 23025: Investigation of Multibeam Sonar Data Processing Efficiencies. This research quantifies 9 levels of data...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 07:31 PM -
An Innerspace 456 single-beam echosounder in conjunction with a Trimble® differential Global Positioning Satellite system (DGPS), HYPACK® navigation software, and Ashtech Z-Xtreme and Trimble®...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:48 PM -
An Innerspace 456 single-beam echosounder in conjunction with a Trimble® differential Global Positioning System (DGPS) and HYPACK® navigation software, and Ashtech Z-Xtreme and Trimble® R8 GNSS...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 16, 2026 at 11:23 PM -
An Innerspace 456 single-beam echosounder in conjunction with a Trimble® differential Global Positioning System (DGPS), HYPACK® navigation software, and Ashtech Z-Xtreme and Trimble® R8 Global...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:42 PM -
This geospatial data set contains the points collected by the echosounder on transects in the downstream project reach surrounding the construction area at River Mile 761.4 below Gavins Point...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 29, 2026 at 01:30 AM -
An Innerspace 456 single-beam echosounder in conjunction with a Trimble® differential Global Positioning System (DGPS), HYPACK® navigation software, and Ashtech Z-Xtreme and Trimble® R8 Global...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:35 PM
