Xan Fredericks
Xan works with the National Geospatial Program as the National Map Liaison to Florida, Georgia, Puerto Rico, and the U.S. Virgin Islands and is the Deputy Chair of the Geospatial Information Response Team.
Alexandra “Xan” Fredericks is the National Map Liaison to Florida, Georgia, Puerto Rico, and the U.S. Virgin Islands for the U.S. Geological Survey National Geospatial Program User Engagement Office and serves as the Deputy Chair of the Geospatial Information Response Team. She is the Chair of the USGS Lidar User Group and Co-Chair of the American Society for Photogrammetry and Remote Sensing (ASPRS) Bathymetry Working Group. Xan works to help people, from USGS scientists and our Nation’s residents to a variety of agencies and entities, discover and coordinate geospatial data through outreach, collaboration, and data visualization.
Xan is a GISCI-certified GIS Professional with an MGIS from Penn State University and a BS in Marine Science-Geology from Eckerd College. She has served on the Urban and Regional Information Systems Association (URISA) Board of Directors and is a Past President of the ASPRS Florida Region. Prior to her current role, Xan was the Lidar Coordinator for the USGS Coastal and Marine Hazards and Resources Program.
Science and Products
EAARL Coastal Topography-Cape Hatteras National Seashore, North Carolina, Post-Nor'Ida, 2009: Bare Earth
EAARL coastal topography - Assateague Island National Seashore, Maryland and Virginia, 2010
EAARL coastal topography-Virginia, post-Nor'Ida, 2009
EAARL coastal topography-Northern Outer Banks, North Carolina, post-Nor'Ida, 2009
EAARL topography-Three Mile Creek and Mobile-Tensaw Delta, Alabama, 2010
EAARL coastal topography-eastern Florida, post-Hurricane Jeanne, 2004
EAARL topography-Potato Creek watershed, Georgia, 2010
EAARL coastal topography-eastern Florida, post-Hurricane Frances, 2004: bare earth
EAARL coastal topography-Gateway National Recreation Area, New Jersey and New York, 2009
EAARL coastal topography-eastern Florida, post-Hurricane Frances, 2004: first surface
EAARL Coastal Topography-Chandeleur Islands, Louisiana, 2010: Bare Earth
ATM Coastal Topography-Louisiana, 2001: UTM Zone 15 (Part 1 of 2)
Coastal Topography-Anegada, British Virgin Islands, 2014
Coastal Topography-Fire Island, New York, 07 May 2012
EAARL Coastal Topography-Assateague Island National Seashore, Maryland and Virginia, 2002
EAARL-B Topography-Suncook River, New Hampshire, 5-6 November 2013: Seamless (Bare Earth and Submerged)
EAARL Coastal Topography-Chandeleur Islands, Louisiana, 4-5 September 2010: Seamless (Bare Earth and Submerged)
Coastal Topography-Assateague Island, Maryland and Virginia, Post-Hurricane Joaquin, 26 November 2015
EAARL-B Topography-Big Thicket National Preserve: Canyonlands and Upper Neches River Corridor Units, Texas, 2014
EAARL-B Topography-Big Thicket National Preserve: Menard Creek Corridor Unit, Texas, 2014
EAARL Coastal Topography-Chandeleur Islands, Louisiana, 12-13 February 2011: Seamless (Bare Earth and Submerged)
EAARL-B Topography-Big Thicket National Preserve: Lower Neches River Corridor Unit, Texas, 2014
EAARL-B Topography-Big Thicket National Preserve: Little Pine Island Bayou Corridor Unit, Texas, 2014
EAARL-B Topography-Big Thicket National Preserve: Big Sandy Creek Corridor Unit, Texas, 2014
Science and Products
- Publications
Filter Total Items: 56
EAARL Coastal Topography-Cape Hatteras National Seashore, North Carolina, Post-Nor'Ida, 2009: Bare Earth
These remotely sensed, geographically referenced elevation measurements of lidar-derived bare-earth (BE) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI. This project provides highly detailed and accurAuthorsJ.M. Bonisteel-Cormier, Amar Nayegandhi, Xan Fredericks, J. C. Brock, C. W. Wright, D.B. Nagle, Sara StevensEAARL coastal topography - Assateague Island National Seashore, Maryland and Virginia, 2010
This DVD contains lidar-derived bare-earth (BE) and first-surface (FS) topography GIS datasets of a portion of the Assateague Island National Seashore in Maryland and Virginia. These datasets were acquired on March 19 and 24, 2010.AuthorsJ.M. Bonisteel-Cormier, Amar Nayegandhi, C. W. Wright, J. C. Brock, D.B. Nagle, Saisudha Vivekanandan, E.S. Klipp, Xan Fredericks, Sara StevensEAARL coastal topography-Virginia, post-Nor'Ida, 2009
This DVD contains lidar-derived first-surface (FS) and bare-earth (BE) topography GIS datasets of a portion of the Virginia coastline beachface. These datasets were acquired post-Nor'Ida on November 27, 2009, November 29, 2009, and December 1, 2009.AuthorsJ.M. Bonisteel-Cormier, Amar Nayegandhi, Xan Fredericks, E.S. Klipp, D.B. Nagle, Saisudha Vivekanandan, C. W. Wright, A. H. Sallenger, J. C. BrockEAARL coastal topography-Northern Outer Banks, North Carolina, post-Nor'Ida, 2009
This DVD contains lidar-derived first-surface (FS) and bare-earth (BE) topography GIS datasets of a portion of the northern Outer Banks beachface in North Carolina. These datasets were acquired post-Nor'Ida on November 27 and 29, 2009.AuthorsJ.M. Bonisteel-Cormier, Amar Nayegandhi, C. W. Wright, A. H. Sallenger, J. C. Brock, D.B. Nagle, Saisudha Vivekanandan, E.S. Klipp, Xan FredericksEAARL topography-Three Mile Creek and Mobile-Tensaw Delta, Alabama, 2010
This DVD contains lidar-derived first-surface (FS) and bare-earth (BE) topography GIS datasets of a portion of the Mobile-Tensaw Delta region and Three Mile Creek in Alabama. These datasets were acquired on March 6, 2010.AuthorsAmar Nayegandhi, J.M. Bonisteel-Cormier, A.P. Clark, C. W. Wright, J. C. Brock, D.B. Nagle, Saisudha Vivekanandan, Xan FredericksEAARL coastal topography-eastern Florida, post-Hurricane Jeanne, 2004
This DVD contains lidar-derived bare-earth (BE) topography GIS datasets of a portion of the eastern Florida coastline beachface, acquired post-Hurricane Jeanne on October 1, 2004.AuthorsXan Fredericks, Amar Nayegandhi, J.M. Bonisteel-Cormier, C. W. Wright, A. H. Sallenger, J. C. Brock, E.S. Klipp, D.B. NagleEAARL topography-Potato Creek watershed, Georgia, 2010
This DVD contains lidar-derived first-surface (FS) and bare-earth (BE) topography GIS datasets of a portion of the Potato Creek watershed in the Apalachicola-Chattahoochee-Flint River basin, Georgia. These datasets were acquired on February 27, 2010.AuthorsJ.M. Bonisteel-Cormier, Amar Nayegandhi, Xan Fredericks, J. W. Jones, C. W. Wright, J. C. Brock, D.B. NagleEAARL coastal topography-eastern Florida, post-Hurricane Frances, 2004: bare earth
This DVD contains lidar-derived bare-earth (BE) topography GIS datasets of a portion of the eastern Florida coastline beachface, acquired post-Hurricane Frances on September 9, 2004.AuthorsXan Yates, Amar Nayegandhi, Jamie M. Bonisteel, C. Wayne Wright, A. H. Sallenger, John Brock, Emily S. Klipp, David B. NagleEAARL coastal topography-Gateway National Recreation Area, New Jersey and New York, 2009
This DVD contains lidar-derived bare-earth (BE) and first-surface (FS) topography GIS datasets of a portion of the Gateway National Recreation Area in New Jersey and New York. These datasets were acquired July 8-9, 2009.AuthorsAmar Nayegandhi, Saisudha Vivekanandan, John Brock, Sara Stevens, C. Wayne Wright, Jamie M. Bonisteel, David B. Nagle, Xan Yates, Emily S. KlippEAARL coastal topography-eastern Florida, post-Hurricane Frances, 2004: first surface
This DVD contains lidar-derived first-surface (FS) topography GIS datasets of a portion of the eastern Florida coastline beachface, acquired post-Hurricane Frances on September 9, 2004.AuthorsXan Yates, Amar Nayegandhi, Jamie M. Bonisteel, C. Wayne Wright, A. H. Sallenger, John Brock, Emily S. Klipp, David B. NagleEAARL Coastal Topography-Chandeleur Islands, Louisiana, 2010: Bare Earth
These remotely sensed, geographically referenced elevation measurements of lidar-derived bare-earth (BE) and submerged topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highlyAuthorsAmar Nayegandhi, Jamie M. Bonisteel-Cormier, John Brock, A. H. Sallenger, C. Wayne Wright, David B. Nagle, Saisudha Vivekanandan, Xan Yates, Emily S. KlippATM Coastal Topography-Louisiana, 2001: UTM Zone 15 (Part 1 of 2)
These remotely sensed, geographically referenced elevation measurements of lidar-derived first-surface (FS) topography were produced collaboratively by the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and accurate dataseAuthorsXan Yates, Amar Nayegandhi, John Brock, A. H. Sallenger, Emily S. Klipp, C. Wayne Wright - Science
- Data
Filter Total Items: 32
Coastal Topography-Anegada, British Virgin Islands, 2014
These datasets provide lidar-derived topography for Anegada and a portion of the submerged environs. Elevation measurements were acquired on January 21, 2014 by an Optech Orion M300, and on March 19-20, 2014 by the second-generation Experimental Advanced Airborne Research Lidar (EAARL-B). The authors acknowledge Emily Klipp, Chris Pali, Virgil Rabine, Rudy Troche, and Wayne Wright, all formerly oCoastal Topography-Fire Island, New York, 07 May 2012
Lidar-derived bare-earth topography Digital Elevation Model (DEM) mosaic and classified point-cloud datasets for Fire Island, New York, were produced from remotely sensed, geographically referenced elevation measurements collected on May 7, 2012.EAARL Coastal Topography-Assateague Island National Seashore, Maryland and Virginia, 2002
These datasets, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in collaboration with the National Park Service, provide lidar-derived first-surface and bare-earth topography for Assateague Island National Seashore, Maryland and Virginia. Elevation measurements were acquired by the Experimental Advanced Airborne Research Lidar (EAARL) during September 2002.EAARL-B Topography-Suncook River, New Hampshire, 5-6 November 2013: Seamless (Bare Earth and Submerged)
This point-cloud dataset, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provides lidar-derived seamless (bare earth and submerged) topography for a portion of the Suncook River in New Hampshire. Elevation measurements were acquired by the second-generation Experimental Advanced Airborne Research Lidar (EAARL-B) on November 5 and 6, 2013, in cooperation wiEAARL Coastal Topography-Chandeleur Islands, Louisiana, 4-5 September 2010: Seamless (Bare Earth and Submerged)
This XYZ dataset, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provides lidar-derived seamless (bare earth and submerged) topography for the Chandeleur Islands in Louisiana. Elevation measurements were acquired by the first-generation Experimental Advanced Airborne Research Lidar (EAARL) on September 4 and 5, 2010. The data were collected as part of a seCoastal Topography-Assateague Island, Maryland and Virginia, Post-Hurricane Joaquin, 26 November 2015
Lidar-derived bare-earth topography Digital Elevation Model (DEM) mosaic and classified point-cloud datasets were produced from remotely sensed, geographically referenced elevation measurements collected post-Hurricane Joaquin on November 26, 2015.EAARL-B Topography-Big Thicket National Preserve: Canyonlands and Upper Neches River Corridor Units, Texas, 2014
These mosaics, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provide lidar-derived first-surface and bare-earth topography for the Canyonlands and Upper Neches River Corridor Units of Big Thicket National Preserve in Texas. Elevation measurements were acquired by the second-generation Experimental Advanced Airborne Research Lidar (EAARL-B) on January 11,EAARL-B Topography-Big Thicket National Preserve: Menard Creek Corridor Unit, Texas, 2014
These mosaics, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provide lidar-derived first-surface and bare-earth topography for the Menard Creek Corridor Unit of Big Thicket National Preserve in Texas. Elevation measurements were acquired by the second-generation Experimental Advanced Airborne Research Lidar (EAARL-B) on January 21 and 22, 2014, in cooperaEAARL Coastal Topography-Chandeleur Islands, Louisiana, 12-13 February 2011: Seamless (Bare Earth and Submerged)
This XYZ dataset, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provides lidar-derived seamless (bare earth and submerged) topography for the Chandeleur Islands in Louisiana. Elevation measurements were acquired by the first-generation Experimental Advanced Airborne Research Lidar (EAARL) on February 12 and 13, 2011. The data were collected as part of a sEAARL-B Topography-Big Thicket National Preserve: Lower Neches River Corridor Unit, Texas, 2014
These mosaics, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provide lidar-derived first-surface and bare-earth topography for the Lower Neches River Corridor Unit of Big Thicket National Preserve in Texas. Elevation measurements were acquired by the second-generation Experimental Advanced Airborne Research Lidar (EAARL-B) on January 11, 15, 17, 18, 19, 2EAARL-B Topography-Big Thicket National Preserve: Little Pine Island Bayou Corridor Unit, Texas, 2014
These mosaics, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provide lidar-derived first-surface and bare-earth topography for the Little Pine Island Bayou Corridor Unit of Big Thicket National Preserve in Texas. Elevation measurements were acquired by the second-generation Experimental Advanced Airborne Research Lidar (EAARL-B) on January 15, 21, 22, 26,EAARL-B Topography-Big Thicket National Preserve: Big Sandy Creek Corridor Unit, Texas, 2014
These mosaics, prepared by the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, provide lidar-derived first-surface and bare-earth topography for the Big Sandy Creek Corridor Unit of Big Thicket National Preserve in Texas. Elevation measurements were acquired by the second-generation Experimental Advanced Airborne Research Lidar (EAARL-B) on January 19, 21, 22, 29, and 30, - News
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