Research Geologist
Email:
lbrothers@usgs.gov
Office Phone:
508-457-2312
Fax:
508-457-2310
ORCID:
0000-0003-2986-5166
Location
384 Woods Hole Road
Woods Hole
, MA
02543-1598
US
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In June 2022, the U.S. Geological Survey, in collaboration with the Massachusetts Office of Coastal Zone Management, collected high-resolution geophysical data, in Nantucket Sound to understand the regional geology in the vicinity of Horseshoe Shoal. This effort is part of a long-term collaboration between the USGS and the Commonwealth of Massachusetts to map the State’s waters, support research on the Quaternary evolution of coastal Massachusetts, resolve the influence of sea-level change and sediment supply on coastal evolution, and strengthen efforts to understand the type, distribution, and quality of subtidal marine habitats. This collaboration produces high-resolution geologic data that serve the needs of...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Atlantic Ocean,
CMHRP,
CZM,
Coastal and Marine Hazards and Resources Program,
DOI, All tags...
Department of the Interior,
Eldridge Shoal,
GeoTIFF,
Horseshoe Shoal,
Marine Geology,
MassCZM,
Massachusetts,
Massachusetts Office of Coastal Zone Management,
Nantucket Sound,
R/V Rafael,
Reson,
Succonnesset Shoal,
T20-P,
Teledyne,
U.S. Geological Survey,
USGS,
United States of America,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
Wreck Shoal,
backscatter,
field activity number 2022-001-FA,
geoscientificInformation,
geospatial datasets,
imageryBaseMapsEarthCover,
marine geology,
marine geophysics,
multibeam backscatter,
multibeam echosounder,
multibeam sonar,
sea-floor acoustic reflectivity,
time-series, Fewer tags
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The U.S. Geological Survey, Woods Hole Coastal and Marine Science Center in cooperation with the University of Maine mapped approximately 50 square kilometers of the seafloor within Belfast Bay, Maine. Three geophysical surveys conducted in 2006, 2008 and 2009 collected swath bathymetric (2006 and 2008) and chirp seismic reflection profile data (2006 and 2009). The project characterized the spatial, morphological and subsurface variability of the Belfast Bay, Maine pockmark field. Pockmarks are large seafloor depressions that are associated with seabed fluid escape.
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Atlantic Ocean,
Belfast Bay,
CMHRP,
Coastal and Marine Hazards and Resources Program,
DOI, All tags...
Department of the Interior,
Edgetech,
Field Activity 2006-024-FA,
Field Activity 2009-037-FA,
Gulf of Maine,
Maine,
Penobscot Bay,
RV Rafael,
SB-424,
U.S. Geological Survey,
USGS,
United States of America,
University of Maine,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
chirp,
geology,
geophysics,
geoscientificInformation,
geospatial datasets,
image,
location,
navigational data,
oceans,
pockmarks,
seismic navigation,
seismic profile,
seismic reflection,
seismic reflection methods,
shapefile,
sub-botom profiling,
trackline navigation, Fewer tags
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Two marine geological surveys were conducted in Nantucket Sound, Massachusetts, in May 2016 and May 2017 by the U.S. Geological Survey as part of an agreement with the Massachusetts Office of Coastal Zone Management to map the geology of the sea floor offshore of Massachusetts. Samples of surficial sediment and photographs of the sea floor were collected at 76 sampling sites within the survey area, and sea-floor videos were collected at 75 of the sites. The sediment data and the observations from the photos and videos are used to explore the nature of the sea floor; in conjunction with high-resolution geophysical data, the observations are used to make interpretive maps of sedimentary environments and validate acoustic...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Atlantic Ocean,
CMHRP,
CZM,
Coastal and Marine Hazards and Resources Program,
MA CZM, All tags...
MP4,
MassCZM,
Massachusetts,
Massachusetts Office of Coastal Zone Management,
MiniSEABOSS,
Nantucket,
Nantucket Sound,
North America,
R/V Rafael,
R/V Tioga,
SEABOSS,
SEABed Observation and Sampling System,
SeaViewer 6000 HD Sea-Drop,
U.S. Geological Survey,
USGS,
United States,
WHCMSC,
Woods Hole Coastal and Marine Science Center,
bottom video,
continental shelf,
field activity 2016-005-FA,
field activity 2017-022-FA,
geoscientificInformation,
ground-truth,
location,
marine geology,
navigational data,
oceans,
sea floor,
sea-floor characteristics,
seabed video,
seafloor,
sediment analysis,
sediments,
shapefile,
sound,
stations,
video monitoring,
video observation,
videography,
videos, Fewer tags
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Geologic structure and isopach maps were constructed by interpreting over 19,890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic reflection profiles from the continental shelf of the Delmarva Peninsula, including Maryland and Virginia state waters. In this region, Brothers and others (2020) interpret 12 seismic units and 11 regional unconformities. They interpret the infilled channels as Late Tertiary and Quaternary courses of the Susquehanna, Potomac, Rappahannock, York and James Rivers and tributaries, in addition to a broad drainage system. These regional unconformities form a composite unconformity interpreted as the Quaternary-Tertiary (Q-T) unconformity. A depth to Tertiary...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: 32-bit GeoTIFF,
Applied Acoustics S-Boom Source,
Assateague Island,
Assateague Island National Seashore,
Atlantic Ocean, All tags...
BOEM,
Bureau of Ocean Energy Management,
CMHRP,
Chesapeake Bay,
Chincoteague Bay,
Chincoteague Bight,
Chincoteague Inlet,
Chincoteague Island,
Chincoteague National Wildlife Refuge,
Coastal and Marine Hazards and Resources Program,
Cobb Island,
Delaware,
Delmarva Peninsula,
Fisherman Island,
Geologic Framework,
Geometrics 16-channel Geoeel Streamer,
Hog Island,
Holocene,
Holocene,
Interpretation,
James River,
Marine Geology,
Maryland,
Maryland Energy Administration,
Maryland Wind Energy Area,
Myrtle Island,
Parramore Island,
Persimmons Point,
Pleistocene,
Potomac River,
Quaternary,
Rappahannock River,
Sea floor,
Seismic Interpretation,
Seismic-reflection Profiles,
Ship Shoal Island,
Smith Island,
Susquehanna River,
Tertiary,
U.S. Geological Survey,
USGS,
Unconformity,
Virginia,
WHCMSC,
Wallops Island,
Woods Hole Coastal and Marine Science Center,
Wreck Island,
geologic contacts,
geoscientificInformation,
geospatial datasets,
imageryBaseMapsEarthCover,
marine geology,
oceans,
scientific interpretation, Fewer tags
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In June 2022, the U.S. Geological Survey, in collaboration with the Massachusetts Office of Coastal Zone Management, collected high-resolution geophysical data, in Nantucket Sound to understand the regional geology in the vicinity of Horseshoe Shoal. This effort is part of a long-term collaboration between the USGS and the Commonwealth of Massachusetts to map the State’s waters, support research on the Quaternary evolution of coastal Massachusetts, resolve the influence of sea-level change and sediment supply on coastal evolution, and strengthen efforts to understand the type, distribution, and quality of subtidal marine habitats. This collaboration produces high-resolution geologic data that serve the needs of...
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