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Filters Date Range Past year (2) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Earth Resources Observation and Science (EROS) Center U.S. Geological Survey Dean B Gesch U.S. Geological Survey - ScienceBase Jeffrey R Irwin More... Tag Schemes None (76) USGS Thesaurus (12) ISO 19115 Topic Category (9) ISO 19115 Category (2) Tags (with Type=Theme ) bathymetry (3) elevation (3) geoscientificinformation (3) 3d elevation program (2) 3dep (2) acoustic doppler current profiling (2) coastal national elevation database (2) More... View Results as: JSON ATOM CSV

One Meter Topobathymetric Digital Elevation Model for Majuro Atoll, Republic of the Marshall Islands, 1944 to 2016 Located in the northern tropical Pacific Ocean, Majuro is the capital of the Republic of the Marshall Islands. Majuro Atoll consists of a large, narrow landmass and a set of smaller perimeter islands surrounding a lagoon that is over 100 square miles in size. The waters surrounding the Majuro Atoll land areas are relatively shallow with poorly mapped bathymetry. However, the Pacific Ocean on the exterior of the coral atoll and the lagoon within its interior consist of deep bathymetry with steep slopes. The highest elevation of the Majuro Atoll is estimated at only 3-meters above sea level, which is the island community of Laura located on the western part of the atoll. At the eastern edge of the atoll lies the capital... Categories: Data; Tags: 3D Elevation Program, 3DEP, American Society of Photogrammetry and Remote Sensing, Base Maps, Bathymetric, All tags... Bathymetry, Calalin, Calalin Channel, CoNED, Coastal National Elevation Database, Coastal Zone, DEM, DTM, Digital Elevation Model, Digital Terrain Model, Djarrit, Earth Cover, Geography, Geomorphology, Hydrologic, Hydrologic Modeling, Information Sciences, Laura, Lidar Bathymetry, Light Detection and Ranging, Majuro, Majuro, Majuro Atoll, Majuro Atoll, Majuro Atoll, Majuro Atoll, Multi-beam Sonar, National Standards for Spatial Digital Accuracy, Pacific Islands, Pacific Ocean, RMI, Remote Sensing, Republic of the Marshall Islands, Republic of the Marshall Islands, Republic of the Marshall Islands, Republic of the Marshall Islands, Rita, SDB, Satellite-derived bathymetry, SfM, Single-beam Sonar, Structure from Motion, TBDEM, Topobathy, Topobathymetric, Topobathymetric Digital Elevation Model, Topobathymetric Lidar, U.S., U.S. Geological Survey, USA, USGS, USGS Science Data Catalog (SDC), United States, Water Resources, Western Pacific, Western Pacific Islands, lidar, Fewer tags Inundation Exposure Assessment for Majuro Atoll, Republic of the Marshall Islands Low-lying island environments, such as the Majuro Atoll in the Republic of the Marshall Islands, are particularly vulnerable to inundation (coastal flooding) whether the increased water levels are from episodic events (storm surge, wave run-up, king tides) or from chronic conditions (long term sea-level rise). Land elevation is the primary geophysical variable that determines exposure to inundation in coastal settings. Accordingly, coastal elevation data are a critical input for assessments of inundation exposure and vulnerability. Previous research has demonstrated that the quality of data used for elevation-based assessments must be well understood and applied to properly model potential impacts. The vertical... Categories: Data; Tags: Atoll, Calalin Channel, Central Pacific, Coastal Flooding, Djarrit, All tags... Episodic Events, Geography, Inundation Vulnerability, King Tides, Laura, Majuro, Majuro Atoll, Pacific Islands, Pacific Ocean, Remote Sensing, Republic of the Marshall Islands, Sea Level Rise, Topobathymetric Digital Elevation Model (TBDEM), USGS Science Data Catalog (SDC), Vertical Uncertainty, boundaries, elevation, geoscientificInformation, Fewer tags Coastal Carolinas Topobathymetric Model: Field Validation Data, 2021 U.S. Geological Survey (USGS) scientists conducted field data collection efforts between March 8th and 25th, 2021 at four sites along coastal North Carolina and South Carolina using high accuracy surveying technologies. The work was initiated as an effort to validate a topobathymetric digital elevation model (TBDEM) produced for the area that was directly impacted by Hurricane Florence in 2018. The goal was to compare the airborne lidar and sonar derived TBDEM to data collected through more traditional means (e.g. Global Navigational Satellite System (GNSS) surveying). In addition, coastal dunes were mapped with ground based lidar (GBL) for computation of dune metrics. The Hurricane Florence TBDEM will support the... Categories: Data; Tags: 3D Elevation Program, 3DEP, CMHRP, Cape Hatteras National Seashore, CoNED, All tags... Coastal National Elevation Database, Coastal and Marine Hazards and Resources Program, DEM, Digital Elevation Model, Fort Fisher State Recreation Area, Fort Macon State Park, GNSS, Geography, Geomorphology, Global Navigation Satellite System, Ground Based Lidar, Huntington Beach State Park, Hydrology, Lidar, Light Detection and Ranging, Marine Geology, Ocracoke Island, Remote Sensing, State of North Carolina, State of South Carolina, TBDEM, Terrestrial Laser Scanning, Topobathy, Topobathymetric Digital Elevation Model, Topobathymetric Lidar, Total Station, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Validation, elevation, geoscientificInformation, location, Fewer tags Pohnpei, Federated States of Micronesia Mangrove Elevation Survey Data U.S. Geological Survey (USGS) scientists conducted field work efforts during February 15-23, 2017 and April 10-25, 2019 in the mangrove forests of Pohnpei, Federated States of Micronesia (FSM) with logistical assistance from the Micronesia Conservation Trust (MCT) and field assistance from the Conservation Society of Pohnpei and the Pohnpei Department of Forestry. The field team combined the surveying technologies and techniques of Real-Time Kinematic (RTK) Global Navigation Satellite System (GNSS) surveying, total station surveying, and differential leveling to measure elevations on critical features in the mangrove forests, including the elevations of water level recorders, sediment coring locations, and Surface... Categories: Data; Tags: Alohkapw, Climate Change Adaptation, Differential Leveling, Dolopwail, Ecology, All tags... Elevation Survey, Enipein, Enipoas, Environmental Health, Federated States of Micronesia, Forestry, GNSS, Geography, Global Navigation Satellite System, Hydrology, Intertidal Environment, Mangroves, Palikir, Pohnpei, Puwdoi, Sapwalap, Sea-level Rise, Total Station, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Vulnerability Assessment, elevation, geoscientificInformation, location, Fewer tags Potomac River ADCP Bathymetric Survey, October 4-7, 2021 Note: this data release has been deprecated. Please see new data release here: https://doi.org/10.5066/P9XM3NKD Bathymetric LiDAR technology was used to collect riverbed elevation data along the Potomac River. In support of this effort, a bathymetric survey with a boat-mounted acoustic Doppler current profiler (ADCP) was conducted in the study area during October 4-7, 2021. The study area consisted of four verification reaches on the Potomac River including: 1) Williamsport accessed through the Williamsport Park boat ramp below Conococheague Creek and RTE 11 (Williamsport), 2) Big Slackwater above C&O Canal Dam #4 accessed through the Big Slackwater Boat Ramp (Dam4), 3) Four Locks above C&O Canal Dam #5 accessed... Categories: Data; Tags: Four Locks, GPS measurement, Hancock, Potomac River, Potomac River Reservoir, All tags... Remote Sensing, State of Maryland, State of West Virginia, Water Resources, Williamsport, acoustic doppler current profiling, bathymetry, geography, geospatial datasets, land surveying, Fewer tags Potomac River ADCP Bathymetric Survey, October 4-7, 2021 Bathymetric LiDAR technology was used to collect riverbed elevation data along the Potomac River. In support of this effort, a bathymetric survey with a boat-mounted acoustic Doppler current profiler (ADCP) was conducted in the study area during October 4-7, 2021. The study area consisted of four verification reaches on the Potomac River including: 1) Williamsport accessed through the Williamsport Park boat ramp below Conococheague Creek and RTE 11 (Williamsport), 2) Big Slackwater above C&O Canal Dam #4 accessed through the Big Slackwater Boat Ramp (Dam4), 3) Four Locks above C&O Canal Dam #5 accessed through the Four Locks Boat Ramp (Dam5), and 4) Little Tonoloway Recreation Area accessed through the Hancock Boat... Categories: Data; Tags: Four Locks, GPS measurement, Hancock, Potomac River, Potomac River Reservoir, All tags... State of Maryland, State of West Virginia, USGS Science Data Catalog (SDC), Water Resources, Williamsport, acoustic doppler current profiling, bathymetry, geography, geospatial datasets, land surveying, Fewer tags