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Alexander R Nichols

As an electronics technician I perform the integration and repair of scientific sampling gear for data collection in the field.

Science and Products

Graphic showing the geophysical systems used to map the seafloor surface and underlying structure, and sampling instruments

Sea Floor Mapping Group

The Sea Floor Mapping Group (SFMG) is a core capability at the Woods Hole Coastal & Marine Science Center (WHCMSC) that provides support for coastal, lacustrine and marine geologic research. The staff has a wide-range of expertise and is responsible for geophysical and sampling data acquisition, processing, interpretation and publication, logistics, design, and research and development. SFMG has...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center, Deep Sea Exploration, Mapping and Characterization, Hurricane Sandy
Sea Floor Mapping Group

Sea Floor Mapping Group

The Sea Floor Mapping Group (SFMG) is a core capability at the Woods Hole Coastal & Marine Science Center (WHCMSC) that provides support for coastal, lacustrine and marine geologic research. The staff has a wide-range of expertise and is responsible for geophysical and sampling data acquisition, processing, interpretation and publication, logistics, design, and research and development. SFMG has...
Learn More

Data Releases

Filter Total Items: 21

High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2024-015-FA High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2024-015-FA

High resolution sea-floor bathymetry, backscatter, and sound velocity profile data were collected offshore of southeastern Louisiana aboard the research vessel Thomas O'Brien on September 14-18, 2024 as part of an effort to characterize mudflow hazards on the Mississippi River Delta Front. The survey was the third field program of the Offshore Analysis of Seafloor Instability and...
By
Woods Hole Coastal and Marine Science Center

High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2023-003-FA High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2023-003-FA

High resolution bathymetric, sea-floor backscatter, and seismic-reflection data were collected offshore of southeastern Louisiana aboard the research vessel Pelican on September 4-29, 2023, as part of an effort to characterize mudflow hazards on the Mississippi River Delta Front. The survey was the third field program of the Offshore Analysis of Seafloor Instability and Sediments (OASIS)...
By
Woods Hole Coastal and Marine Science Center

High-resolution geophysical data collected along the Mississippi River Delta front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2022-004-FA High-resolution geophysical data collected along the Mississippi River Delta front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2022-004-FA

High resolution bathymetric, sea-floor backscatter, water column, and seismic-reflection data were collected offshore of southeastern Louisiana aboard the research vessel Pelican on September 9 - 22, 2022, as part of an effort to characterize mudflow hazards on the Mississippi River Delta Front. The survey was the second field program of the Offshore Analysis of Seafloor Instability and...
By
Woods Hole Coastal and Marine Science Center

High-resolution geophysical data and sampling data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2023-001-FA High-resolution geophysical data and sampling data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2023-001-FA

In May and June 2023, the U.S. Geological Survey, in collaboration with the Massachusetts Office of Coastal Zone Management, collected high-resolution geophysical and seafloor sampling data, in Nantucket Sound to understand the regional geology in the vicinity of Horseshoe Shoal. Geophysical data collected include swath bathymetry, backscatter, and seismic reflection profile data. Ground...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Multibeam data collected in the vicinity of Eel Pond, Woods Hole, Massachusetts, during field activity 2021-037-FA using an Integrated Dual-Head Teledyne Reson T20-R echo sounder Multibeam data collected in the vicinity of Eel Pond, Woods Hole, Massachusetts, during field activity 2021-037-FA using an Integrated Dual-Head Teledyne Reson T20-R echo sounder

In November 2021, the U.S. Geological Survey collected high-resolution multibeam sonar data in the vicinity of Eel Pond, in Woods Hole, Massachusetts using a dual-head Teledyne Seabat T20-R multibeam echo sounder (MBES). The main objective of this survey was to evaluate new sonar system features prior to their use in future field activities. In addition to bathymetry and relative...
By
Woods Hole Coastal and Marine Science Center

High-resolution geophysical and geological data collected from outer Cape Cod, Massachusetts during USGS Field Activity 2021-004-FA High-resolution geophysical and geological data collected from outer Cape Cod, Massachusetts during USGS Field Activity 2021-004-FA

The U.S. Geological Survey (USGS) Woods Hole Coastal and Marine Science Center (WHCMSC) completed a bathymetric and shallow seismic-reflection survey during the period of June 9, 2021 to June 24, 2021 in water depths from 2 m to 30 m for a portion of the outer Cape Cod nearshore environment between Marconi and Nauset Beaches. The products from this survey will help to support white shark...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

High-resolution multichannel sparker seismic-reflection and chirp sub-bottom data acquired along the Cascadia margin during USGS field activity 2019-024-FA High-resolution multichannel sparker seismic-reflection and chirp sub-bottom data acquired along the Cascadia margin during USGS field activity 2019-024-FA

High-resolution multichannel sparker seismic (MCS) data and chirp sub-bottom data were collected by the U.S. Geological Survey in collaboration with the University of Washington (UW) in the summer of 2019 along the Cascadia submarine forearc offshore Oregon and Washington. Data were acquired to characterize quaternary deformation and sediment dynamics along the central and northern...
By
Pacific Coastal and Marine Science Center

High-resolution geophysical data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2022-001-FA High-resolution geophysical data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2022-001-FA

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...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Multichannel sparker and chirp seismic reflection data collected offshore South East Alaska during USGS Field Activity 2017-621-FA Multichannel sparker and chirp seismic reflection data collected offshore South East Alaska during USGS Field Activity 2017-621-FA

High-resolution multichannel seismic reflection data and chirp sub-bottom data were collected by the U.S. Geological Survey in July and August 2017 offshore southeast Alaska to expand data coverage along the Queen Charlotte Fault system. Data were acquired to study earthquake hazards, fault mechanics and submarine mass wasting processes along the Queen Charlotte fault system, a 1200 km...
By
Pacific Coastal and Marine Science Center

High-resolution geophysical and sample data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, U.S. Geological Survey Field Activity 2021-005-FA High-resolution geophysical and sample data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, U.S. Geological Survey Field Activity 2021-005-FA

In August 2021, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, collected high-resolution geophysical data, sediment samples, and bottom imagery to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in the...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center, Great Lakes Restoration Initiative

Multichannel seismic-reflection and navigation data collected using SIG ELC1200 and Applied Acoustics Delta Sparkers and Geometrics GeoEel digital streamers during USGS field activity 2020-014-FA. Multichannel seismic-reflection and navigation data collected using SIG ELC1200 and Applied Acoustics Delta Sparkers and Geometrics GeoEel digital streamers during USGS field activity 2020-014-FA.

In March 2020, the U.S. Geological Survey and the University of Puerto Rico Mayaguez (UPRM) Department of Marine Sciences conducted a marine seismic-reflection experiment focused on observing geophysical evidence of submarine faulting and mass wasting related to the southwestern Puerto Rico seismic sequence of 2019-20. The seismic sequence culminated with a magnitude 6.4 earthquake...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Discharge measurements made in Bayou Heron and Bayou Middle, Grand Bay, Mississippi in January 2017 Discharge measurements made in Bayou Heron and Bayou Middle, Grand Bay, Mississippi in January 2017

Grand Bay, a 30-square-kilometer embayment of the Gulf of Mexico bordered by 20 square kilometers of salt marsh, is experiencing rapid lateral shoreline erosion at up to 5 meters per year. Determining whether the eroded sediment is exported to the deep ocean or imported via tidal channels and deposited on the marsh platform is critical to understanding the long-term response of the marsh...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Science and Products

Graphic showing the geophysical systems used to map the seafloor surface and underlying structure, and sampling instruments

Sea Floor Mapping Group

The Sea Floor Mapping Group (SFMG) is a core capability at the Woods Hole Coastal & Marine Science Center (WHCMSC) that provides support for coastal, lacustrine and marine geologic research. The staff has a wide-range of expertise and is responsible for geophysical and sampling data acquisition, processing, interpretation and publication, logistics, design, and research and development. SFMG has...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center, Deep Sea Exploration, Mapping and Characterization, Hurricane Sandy
Sea Floor Mapping Group

Sea Floor Mapping Group

The Sea Floor Mapping Group (SFMG) is a core capability at the Woods Hole Coastal & Marine Science Center (WHCMSC) that provides support for coastal, lacustrine and marine geologic research. The staff has a wide-range of expertise and is responsible for geophysical and sampling data acquisition, processing, interpretation and publication, logistics, design, and research and development. SFMG has...
Learn More

Data Releases

Filter Total Items: 21

High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2024-015-FA High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2024-015-FA

High resolution sea-floor bathymetry, backscatter, and sound velocity profile data were collected offshore of southeastern Louisiana aboard the research vessel Thomas O'Brien on September 14-18, 2024 as part of an effort to characterize mudflow hazards on the Mississippi River Delta Front. The survey was the third field program of the Offshore Analysis of Seafloor Instability and...
By
Woods Hole Coastal and Marine Science Center

High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2023-003-FA High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2023-003-FA

High resolution bathymetric, sea-floor backscatter, and seismic-reflection data were collected offshore of southeastern Louisiana aboard the research vessel Pelican on September 4-29, 2023, as part of an effort to characterize mudflow hazards on the Mississippi River Delta Front. The survey was the third field program of the Offshore Analysis of Seafloor Instability and Sediments (OASIS)...
By
Woods Hole Coastal and Marine Science Center

High-resolution geophysical data collected along the Mississippi River Delta front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2022-004-FA High-resolution geophysical data collected along the Mississippi River Delta front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2022-004-FA

High resolution bathymetric, sea-floor backscatter, water column, and seismic-reflection data were collected offshore of southeastern Louisiana aboard the research vessel Pelican on September 9 - 22, 2022, as part of an effort to characterize mudflow hazards on the Mississippi River Delta Front. The survey was the second field program of the Offshore Analysis of Seafloor Instability and...
By
Woods Hole Coastal and Marine Science Center

High-resolution geophysical data and sampling data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2023-001-FA High-resolution geophysical data and sampling data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2023-001-FA

In May and June 2023, the U.S. Geological Survey, in collaboration with the Massachusetts Office of Coastal Zone Management, collected high-resolution geophysical and seafloor sampling data, in Nantucket Sound to understand the regional geology in the vicinity of Horseshoe Shoal. Geophysical data collected include swath bathymetry, backscatter, and seismic reflection profile data. Ground...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Multibeam data collected in the vicinity of Eel Pond, Woods Hole, Massachusetts, during field activity 2021-037-FA using an Integrated Dual-Head Teledyne Reson T20-R echo sounder Multibeam data collected in the vicinity of Eel Pond, Woods Hole, Massachusetts, during field activity 2021-037-FA using an Integrated Dual-Head Teledyne Reson T20-R echo sounder

In November 2021, the U.S. Geological Survey collected high-resolution multibeam sonar data in the vicinity of Eel Pond, in Woods Hole, Massachusetts using a dual-head Teledyne Seabat T20-R multibeam echo sounder (MBES). The main objective of this survey was to evaluate new sonar system features prior to their use in future field activities. In addition to bathymetry and relative...
By
Woods Hole Coastal and Marine Science Center

High-resolution geophysical and geological data collected from outer Cape Cod, Massachusetts during USGS Field Activity 2021-004-FA High-resolution geophysical and geological data collected from outer Cape Cod, Massachusetts during USGS Field Activity 2021-004-FA

The U.S. Geological Survey (USGS) Woods Hole Coastal and Marine Science Center (WHCMSC) completed a bathymetric and shallow seismic-reflection survey during the period of June 9, 2021 to June 24, 2021 in water depths from 2 m to 30 m for a portion of the outer Cape Cod nearshore environment between Marconi and Nauset Beaches. The products from this survey will help to support white shark...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

High-resolution multichannel sparker seismic-reflection and chirp sub-bottom data acquired along the Cascadia margin during USGS field activity 2019-024-FA High-resolution multichannel sparker seismic-reflection and chirp sub-bottom data acquired along the Cascadia margin during USGS field activity 2019-024-FA

High-resolution multichannel sparker seismic (MCS) data and chirp sub-bottom data were collected by the U.S. Geological Survey in collaboration with the University of Washington (UW) in the summer of 2019 along the Cascadia submarine forearc offshore Oregon and Washington. Data were acquired to characterize quaternary deformation and sediment dynamics along the central and northern...
By
Pacific Coastal and Marine Science Center

High-resolution geophysical data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2022-001-FA High-resolution geophysical data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2022-001-FA

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...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Multichannel sparker and chirp seismic reflection data collected offshore South East Alaska during USGS Field Activity 2017-621-FA Multichannel sparker and chirp seismic reflection data collected offshore South East Alaska during USGS Field Activity 2017-621-FA

High-resolution multichannel seismic reflection data and chirp sub-bottom data were collected by the U.S. Geological Survey in July and August 2017 offshore southeast Alaska to expand data coverage along the Queen Charlotte Fault system. Data were acquired to study earthquake hazards, fault mechanics and submarine mass wasting processes along the Queen Charlotte fault system, a 1200 km...
By
Pacific Coastal and Marine Science Center

High-resolution geophysical and sample data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, U.S. Geological Survey Field Activity 2021-005-FA High-resolution geophysical and sample data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, U.S. Geological Survey Field Activity 2021-005-FA

In August 2021, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, collected high-resolution geophysical data, sediment samples, and bottom imagery to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in the...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center, Great Lakes Restoration Initiative

Multichannel seismic-reflection and navigation data collected using SIG ELC1200 and Applied Acoustics Delta Sparkers and Geometrics GeoEel digital streamers during USGS field activity 2020-014-FA. Multichannel seismic-reflection and navigation data collected using SIG ELC1200 and Applied Acoustics Delta Sparkers and Geometrics GeoEel digital streamers during USGS field activity 2020-014-FA.

In March 2020, the U.S. Geological Survey and the University of Puerto Rico Mayaguez (UPRM) Department of Marine Sciences conducted a marine seismic-reflection experiment focused on observing geophysical evidence of submarine faulting and mass wasting related to the southwestern Puerto Rico seismic sequence of 2019-20. The seismic sequence culminated with a magnitude 6.4 earthquake...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Discharge measurements made in Bayou Heron and Bayou Middle, Grand Bay, Mississippi in January 2017 Discharge measurements made in Bayou Heron and Bayou Middle, Grand Bay, Mississippi in January 2017

Grand Bay, a 30-square-kilometer embayment of the Gulf of Mexico bordered by 20 square kilometers of salt marsh, is experiencing rapid lateral shoreline erosion at up to 5 meters per year. Determining whether the eroded sediment is exported to the deep ocean or imported via tidal channels and deposited on the marsh platform is critical to understanding the long-term response of the marsh...
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
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