Unique shot point navigation for chirp seismic data collected in Indian River Bay, Delaware, April 13, 2010, on U.S. Geological Survey Field Activity 2010-006-FA (IR_SEISNAV.SHP, Geographic, WGS 84)
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 in...
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2014
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dataone:31446772-edc5-4874-8ea5-e786ce09358d 2024-06-03T18:47:04+00:00 Unique shot point navigation for chirp seismic data collected in Indian River Bay, Delaware, April 13, 2010, on U.S. Geological Survey Field Activity 2010-006-FA (IR_SEISNAV.SHP, Geographic, WGS 84) John F. Bratton VeeAnn A. Cross ENVELOPE(-75.20209,-75.062935,38.618984,38.569244) 2014-01-01T00:00:00Z https://search.dataone.org/view/31446772-edc5-4874-8ea5-e786ce09358d unknown USGS Science Data Catalog U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Coastal and Marine Science Center WHCMSC Field Activity Number 2010-006-FA Info Bank ID K-6-10-DL navigation shot point navigation seismic navigation R/V Knob Lowrance GPS point shapefile EdgeTech 424 chirp seismics Open-file Report 2011-1039 location oceans North America North Atlantic Ocean United States Delaware Indian River Bay Indian River Inlet Holts Landing Piney Neck Sussex County Rosedale Beach Dataset 2014 dataone:urn:node:USGS_SDC 2024-06-03T18:10:54Z 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 https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-006-FA. Dataset North Atlantic USGS Science Data Catalog (via DataONE) Indian River Bay ENVELOPE(-55.881,-55.881,51.600,51.600) ENVELOPE(-75.20209,-75.062935,38.618984,38.569244) |
institution |
Open Polar |
collection |
USGS Science Data Catalog (via DataONE) |
op_collection_id |
dataone:urn:node:USGS_SDC |
language |
unknown |
topic |
U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Coastal and Marine Science Center WHCMSC Field Activity Number 2010-006-FA Info Bank ID K-6-10-DL navigation shot point navigation seismic navigation R/V Knob Lowrance GPS point shapefile EdgeTech 424 chirp seismics Open-file Report 2011-1039 location oceans North America North Atlantic Ocean United States Delaware Indian River Bay Indian River Inlet Holts Landing Piney Neck Sussex County Rosedale Beach |
spellingShingle |
U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Coastal and Marine Science Center WHCMSC Field Activity Number 2010-006-FA Info Bank ID K-6-10-DL navigation shot point navigation seismic navigation R/V Knob Lowrance GPS point shapefile EdgeTech 424 chirp seismics Open-file Report 2011-1039 location oceans North America North Atlantic Ocean United States Delaware Indian River Bay Indian River Inlet Holts Landing Piney Neck Sussex County Rosedale Beach John F. Bratton VeeAnn A. Cross Unique shot point navigation for chirp seismic data collected in Indian River Bay, Delaware, April 13, 2010, on U.S. Geological Survey Field Activity 2010-006-FA (IR_SEISNAV.SHP, Geographic, WGS 84) |
topic_facet |
U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Coastal and Marine Science Center WHCMSC Field Activity Number 2010-006-FA Info Bank ID K-6-10-DL navigation shot point navigation seismic navigation R/V Knob Lowrance GPS point shapefile EdgeTech 424 chirp seismics Open-file Report 2011-1039 location oceans North America North Atlantic Ocean United States Delaware Indian River Bay Indian River Inlet Holts Landing Piney Neck Sussex County Rosedale Beach |
description |
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 https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-006-FA. |
format |
Dataset |
author |
John F. Bratton VeeAnn A. Cross |
author_facet |
John F. Bratton VeeAnn A. Cross |
author_sort |
John F. Bratton |
title |
Unique shot point navigation for chirp seismic data collected in Indian River Bay, Delaware, April 13, 2010, on U.S. Geological Survey Field Activity 2010-006-FA (IR_SEISNAV.SHP, Geographic, WGS 84) |
title_short |
Unique shot point navigation for chirp seismic data collected in Indian River Bay, Delaware, April 13, 2010, on U.S. Geological Survey Field Activity 2010-006-FA (IR_SEISNAV.SHP, Geographic, WGS 84) |
title_full |
Unique shot point navigation for chirp seismic data collected in Indian River Bay, Delaware, April 13, 2010, on U.S. Geological Survey Field Activity 2010-006-FA (IR_SEISNAV.SHP, Geographic, WGS 84) |
title_fullStr |
Unique shot point navigation for chirp seismic data collected in Indian River Bay, Delaware, April 13, 2010, on U.S. Geological Survey Field Activity 2010-006-FA (IR_SEISNAV.SHP, Geographic, WGS 84) |
title_full_unstemmed |
Unique shot point navigation for chirp seismic data collected in Indian River Bay, Delaware, April 13, 2010, on U.S. Geological Survey Field Activity 2010-006-FA (IR_SEISNAV.SHP, Geographic, WGS 84) |
title_sort |
unique shot point navigation for chirp seismic data collected in indian river bay, delaware, april 13, 2010, on u.s. geological survey field activity 2010-006-fa (ir_seisnav.shp, geographic, wgs 84) |
publisher |
USGS Science Data Catalog |
publishDate |
2014 |
url |
https://search.dataone.org/view/31446772-edc5-4874-8ea5-e786ce09358d |
op_coverage |
ENVELOPE(-75.20209,-75.062935,38.618984,38.569244) |
long_lat |
ENVELOPE(-55.881,-55.881,51.600,51.600) ENVELOPE(-75.20209,-75.062935,38.618984,38.569244) |
geographic |
Indian River Bay |
geographic_facet |
Indian River Bay |
genre |
North Atlantic |
genre_facet |
North Atlantic |
_version_ |
1800875530737680384 |