Nancy DeWitt
Nancy DeWitt is a Geologist at the St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida.
Science and Products
Filter Total Items: 35
Multibeam Bathymetry Data Collected in 2018 offshore of Cedar Key, Florida Multibeam Bathymetry Data Collected in 2018 offshore of Cedar Key, Florida
The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted a multibeam bathymetry survey of a selected area offshore Cedar Key, Florida (FL) for the Florida Big Bend Pilot Study funded by USGS and the National Oceanic Atmospheric Administration (NOAA). The study involves federal, state, and local agencies who are taking a comprehensive approach...
Coastal Bathymetry Data Collected in August 2018 from the Chandeleur Islands, Louisiana Coastal Bathymetry Data Collected in August 2018 from the Chandeleur Islands, Louisiana
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida (USGS-SPCSMC), conducted a bathymetric survey of the Northern Chandeleur Islands, in August 2018. During this study, multibeam bathymetry data were collected aboard the research vessel (R/V) Sallenger, while single-beam bathymetry data were collected aboard the R/V Jabba...
Archive of Chirp Subbottom Profile Data Collected in 2018 From the Northern Chandeleur Islands, Louisiana Archive of Chirp Subbottom Profile Data Collected in 2018 From the Northern Chandeleur Islands, Louisiana
As part of the Barrier Island Evolution Research Project, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted a nearshore geophysical survey around the northern Chandeleur Islands, Louisiana, in August of 2017. The objective of the project is to improve the understanding of barrier island geomorphic evolution, particularly storm...
Single-Beam Bathymetric Data Collected in 2004 and 2008 from the Mississippi River Delta Plain, Louisiana Single-Beam Bathymetric Data Collected in 2004 and 2008 from the Mississippi River Delta Plain, Louisiana
This data release serves as an archive of single-beam bathymetric (SBB) data collected in July 2004 (Madison Bay study area; U.S. Geological Survey [USGS] Field Activity Number [FAN] 2004-303-FA) and August 2008 (Bully Camp, Point au Chien, Caminada, Fourchon, and Leeville study areas; USGS FAN 08SWL02) at six study areas in the Mississippi River Delta Plain (MRDP), Louisiana. Data were...
Archive of Chirp Subbottom Profile Data Collected in June 2018 From Fire Island, New York Archive of Chirp Subbottom Profile Data Collected in June 2018 From Fire Island, New York
Researchers from the U.S. Geological Survey (USGS) conducted a long-term, coastal morphologic-change study at Fire Island, New York, prior to and after Hurricane Sandy impacted the area in October 2012. The Fire Island Coastal System Change project objectives include understanding the morphologic evolution of the barrier island system on a variety of time scales (months to centuries) and...
Coastal Bathymetry Data Collected in June 2018 from Fire Island, New York: Wilderness Breach and Shoreface Coastal Bathymetry Data Collected in June 2018 from Fire Island, New York: Wilderness Breach and Shoreface
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida, conducted a bathymetric survey of Fire Island, New York, from June 2 to 17, 2018. The U.S. Geological Survey is involved in a post-Hurricane Sandy effort to map and monitor the morphologic evolution of the wilderness breach and the adjacent shoreface environment. During...
Filter Total Items: 32
Archive of single-beam bathymetry data collected from select areas in Weeks Bay and Weeks Bayou, southwest Louisiana, January 2013 Archive of single-beam bathymetry data collected from select areas in Weeks Bay and Weeks Bayou, southwest Louisiana, January 2013
A team of scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, collected 92 line-kilometers of dual-frequency single-beam bathymetry data in the tidal creeks, bayous, and coastal areas near Weeks Bay, southwest Louisiana. Limited bathymetry data exist for these tidally and meteorologically influenced shallow-water estuarine environments. In order...
Authors
Nancy T. DeWitt, Christopher D. Reich, Christopher G. Smith, Billy J. Reynolds
Coastal bathymetry and backscatter data collected in 2012 from the Chandeleur Islands, Louisiana Coastal bathymetry and backscatter data collected in 2012 from the Chandeleur Islands, Louisiana
As part of the Barrier Island Evolution Research Project, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center conducted nearshore geophysical surveys off the northern Chandeleur Islands, Louisiana, in July and August of 2012. The objective of the study is to better understand barrier island geomorphic evolution, particularly storm-related...
Authors
Nancy T. DeWitt, Julie Bernier, William R. Pfeiffer, Jennifer L. Miselis, B.J. Reynolds, Dana S. Wiese, Kyle W. Kelso
Archive of single-beam bathymetry data collected during USGS cruise 07CCT01 nearshore of Fort Massachusetts and within Camille Cut, West and East Ship Islands, Gulf Islands National Seashore, Mississippi, July 2007 Archive of single-beam bathymetry data collected during USGS cruise 07CCT01 nearshore of Fort Massachusetts and within Camille Cut, West and East Ship Islands, Gulf Islands National Seashore, Mississippi, July 2007
The Gulf Islands National Seashore (GUIS) is composed of a series of barrier islands along the Mississippi - Alabama coastline. Historically these islands have undergone long-term shoreline change. The devastation of Hurricane Katrina in 2005 prompted questions about the stability of the barrier islands and their potential response to future storm impacts. Additionally, there was concern...
Authors
Nancy T. DeWitt, James G. Flocks, B.J. Reynolds, Mark Hansen
Archive of single beam and swath bathymetry data collected nearshore of the Gulf Islands National Seashore, Mississippi, from West Ship Island, Mississippi, to Dauphin Island, Alabama: Methods and data report for USGS Cruises 08CCT01 and 08CCT02, July 200 Archive of single beam and swath bathymetry data collected nearshore of the Gulf Islands National Seashore, Mississippi, from West Ship Island, Mississippi, to Dauphin Island, Alabama: Methods and data report for USGS Cruises 08CCT01 and 08CCT02, July 200
During the summers of 2008 and 2009 the USGS conducted bathymetric surveys from West Ship Island, Miss., to Dauphin Island, Ala., as part of the Northern Gulf of Mexico (NGOM) Ecosystem Change and Hazard Susceptibility project. The survey area extended from the shoreline out to approximately 2 kilometers and included the adjacent passes (fig. 1). The bathymetry was primarily used to...
Authors
Nancy T. DeWitt, James G. Flocks, Elizabeth A. Pendleton, Mark E. Hansen, B.J. Reynolds, Kyle W. Kelso, Dana S. Wiese, Charles R. Worley
Archive of side scan sonar and swath bathymetry data collected during USGS cruise 10CCT03 offshore of the Gulf Islands National Seashore, Mississippi, from East Ship Island, Mississippi, to Dauphin Island, Alabama, April 2010 Archive of side scan sonar and swath bathymetry data collected during USGS cruise 10CCT03 offshore of the Gulf Islands National Seashore, Mississippi, from East Ship Island, Mississippi, to Dauphin Island, Alabama, April 2010
In April of 2010, the U.S. Geological Survey (USGS) conducted a geophysical survey from the east end of East Ship Island, Miss., extending to the middle of Dauphin Island, Ala. (fig. 1). This survey had a dual purpose: (1) to interlink previously conducted nearshore geophysical surveys (shoreline to ~2 km) with those of offshore surveys (~2 to ~9 km) in the area, and (2) to extend the...
Authors
Nancy T. DeWitt, James G. Flocks, William R. Pfeiffer, James N. Gibson, Dana S. Wiese
The shallow stratigraphy and sand resources offshore of the Mississippi Barrier Islands The shallow stratigraphy and sand resources offshore of the Mississippi Barrier Islands
Coastal Mississippi is protected by a series of barrier islands ranging in length from 10-25 kilometers that are less than 2 kilometers wide. The majority of these islands comprise the Gulf Islands National Seashore (GUIS), an ecologically diverse shoreline that provides habitat for wildlife including migratory birds and endangered animals. The majority of GUIS is submerged, and aquatic
Authors
David Twichell, Elizabeth A. Pendleton, Wayne Baldwin, David Foster, James Flocks, Kyle Kelso, Nancy DeWitt, William Pfeiffer, Arnell Forde, Jason Krick, John Baehr
Science and Products
Filter Total Items: 35
Multibeam Bathymetry Data Collected in 2018 offshore of Cedar Key, Florida Multibeam Bathymetry Data Collected in 2018 offshore of Cedar Key, Florida
The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted a multibeam bathymetry survey of a selected area offshore Cedar Key, Florida (FL) for the Florida Big Bend Pilot Study funded by USGS and the National Oceanic Atmospheric Administration (NOAA). The study involves federal, state, and local agencies who are taking a comprehensive approach...
Coastal Bathymetry Data Collected in August 2018 from the Chandeleur Islands, Louisiana Coastal Bathymetry Data Collected in August 2018 from the Chandeleur Islands, Louisiana
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida (USGS-SPCSMC), conducted a bathymetric survey of the Northern Chandeleur Islands, in August 2018. During this study, multibeam bathymetry data were collected aboard the research vessel (R/V) Sallenger, while single-beam bathymetry data were collected aboard the R/V Jabba...
Archive of Chirp Subbottom Profile Data Collected in 2018 From the Northern Chandeleur Islands, Louisiana Archive of Chirp Subbottom Profile Data Collected in 2018 From the Northern Chandeleur Islands, Louisiana
As part of the Barrier Island Evolution Research Project, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted a nearshore geophysical survey around the northern Chandeleur Islands, Louisiana, in August of 2017. The objective of the project is to improve the understanding of barrier island geomorphic evolution, particularly storm...
Single-Beam Bathymetric Data Collected in 2004 and 2008 from the Mississippi River Delta Plain, Louisiana Single-Beam Bathymetric Data Collected in 2004 and 2008 from the Mississippi River Delta Plain, Louisiana
This data release serves as an archive of single-beam bathymetric (SBB) data collected in July 2004 (Madison Bay study area; U.S. Geological Survey [USGS] Field Activity Number [FAN] 2004-303-FA) and August 2008 (Bully Camp, Point au Chien, Caminada, Fourchon, and Leeville study areas; USGS FAN 08SWL02) at six study areas in the Mississippi River Delta Plain (MRDP), Louisiana. Data were...
Archive of Chirp Subbottom Profile Data Collected in June 2018 From Fire Island, New York Archive of Chirp Subbottom Profile Data Collected in June 2018 From Fire Island, New York
Researchers from the U.S. Geological Survey (USGS) conducted a long-term, coastal morphologic-change study at Fire Island, New York, prior to and after Hurricane Sandy impacted the area in October 2012. The Fire Island Coastal System Change project objectives include understanding the morphologic evolution of the barrier island system on a variety of time scales (months to centuries) and...
Coastal Bathymetry Data Collected in June 2018 from Fire Island, New York: Wilderness Breach and Shoreface Coastal Bathymetry Data Collected in June 2018 from Fire Island, New York: Wilderness Breach and Shoreface
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida, conducted a bathymetric survey of Fire Island, New York, from June 2 to 17, 2018. The U.S. Geological Survey is involved in a post-Hurricane Sandy effort to map and monitor the morphologic evolution of the wilderness breach and the adjacent shoreface environment. During...
Filter Total Items: 32
Archive of single-beam bathymetry data collected from select areas in Weeks Bay and Weeks Bayou, southwest Louisiana, January 2013 Archive of single-beam bathymetry data collected from select areas in Weeks Bay and Weeks Bayou, southwest Louisiana, January 2013
A team of scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, collected 92 line-kilometers of dual-frequency single-beam bathymetry data in the tidal creeks, bayous, and coastal areas near Weeks Bay, southwest Louisiana. Limited bathymetry data exist for these tidally and meteorologically influenced shallow-water estuarine environments. In order...
Authors
Nancy T. DeWitt, Christopher D. Reich, Christopher G. Smith, Billy J. Reynolds
Coastal bathymetry and backscatter data collected in 2012 from the Chandeleur Islands, Louisiana Coastal bathymetry and backscatter data collected in 2012 from the Chandeleur Islands, Louisiana
As part of the Barrier Island Evolution Research Project, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center conducted nearshore geophysical surveys off the northern Chandeleur Islands, Louisiana, in July and August of 2012. The objective of the study is to better understand barrier island geomorphic evolution, particularly storm-related...
Authors
Nancy T. DeWitt, Julie Bernier, William R. Pfeiffer, Jennifer L. Miselis, B.J. Reynolds, Dana S. Wiese, Kyle W. Kelso
Archive of single-beam bathymetry data collected during USGS cruise 07CCT01 nearshore of Fort Massachusetts and within Camille Cut, West and East Ship Islands, Gulf Islands National Seashore, Mississippi, July 2007 Archive of single-beam bathymetry data collected during USGS cruise 07CCT01 nearshore of Fort Massachusetts and within Camille Cut, West and East Ship Islands, Gulf Islands National Seashore, Mississippi, July 2007
The Gulf Islands National Seashore (GUIS) is composed of a series of barrier islands along the Mississippi - Alabama coastline. Historically these islands have undergone long-term shoreline change. The devastation of Hurricane Katrina in 2005 prompted questions about the stability of the barrier islands and their potential response to future storm impacts. Additionally, there was concern...
Authors
Nancy T. DeWitt, James G. Flocks, B.J. Reynolds, Mark Hansen
Archive of single beam and swath bathymetry data collected nearshore of the Gulf Islands National Seashore, Mississippi, from West Ship Island, Mississippi, to Dauphin Island, Alabama: Methods and data report for USGS Cruises 08CCT01 and 08CCT02, July 200 Archive of single beam and swath bathymetry data collected nearshore of the Gulf Islands National Seashore, Mississippi, from West Ship Island, Mississippi, to Dauphin Island, Alabama: Methods and data report for USGS Cruises 08CCT01 and 08CCT02, July 200
During the summers of 2008 and 2009 the USGS conducted bathymetric surveys from West Ship Island, Miss., to Dauphin Island, Ala., as part of the Northern Gulf of Mexico (NGOM) Ecosystem Change and Hazard Susceptibility project. The survey area extended from the shoreline out to approximately 2 kilometers and included the adjacent passes (fig. 1). The bathymetry was primarily used to...
Authors
Nancy T. DeWitt, James G. Flocks, Elizabeth A. Pendleton, Mark E. Hansen, B.J. Reynolds, Kyle W. Kelso, Dana S. Wiese, Charles R. Worley
Archive of side scan sonar and swath bathymetry data collected during USGS cruise 10CCT03 offshore of the Gulf Islands National Seashore, Mississippi, from East Ship Island, Mississippi, to Dauphin Island, Alabama, April 2010 Archive of side scan sonar and swath bathymetry data collected during USGS cruise 10CCT03 offshore of the Gulf Islands National Seashore, Mississippi, from East Ship Island, Mississippi, to Dauphin Island, Alabama, April 2010
In April of 2010, the U.S. Geological Survey (USGS) conducted a geophysical survey from the east end of East Ship Island, Miss., extending to the middle of Dauphin Island, Ala. (fig. 1). This survey had a dual purpose: (1) to interlink previously conducted nearshore geophysical surveys (shoreline to ~2 km) with those of offshore surveys (~2 to ~9 km) in the area, and (2) to extend the...
Authors
Nancy T. DeWitt, James G. Flocks, William R. Pfeiffer, James N. Gibson, Dana S. Wiese
The shallow stratigraphy and sand resources offshore of the Mississippi Barrier Islands The shallow stratigraphy and sand resources offshore of the Mississippi Barrier Islands
Coastal Mississippi is protected by a series of barrier islands ranging in length from 10-25 kilometers that are less than 2 kilometers wide. The majority of these islands comprise the Gulf Islands National Seashore (GUIS), an ecologically diverse shoreline that provides habitat for wildlife including migratory birds and endangered animals. The majority of GUIS is submerged, and aquatic
Authors
David Twichell, Elizabeth A. Pendleton, Wayne Baldwin, David Foster, James Flocks, Kyle Kelso, Nancy DeWitt, William Pfeiffer, Arnell Forde, Jason Krick, John Baehr