UAS

Remote Sensing of Tracer Dye Concentrations in Rivers

Submitted by atripp on Tue, 12/11/2018 - 13:51

The flow of water in a river channel redistributes various materials, including organisms and pollutants, through a process called dispersion.  Understanding this mechanism is critical for applications ranging from species conservation to hazardous waste management.  Tracer tests with a visible dye are often used to study dispersion, typically by measuring dye concentration directly in the field at a few fixed locations.

Bottomland Hardwood Restoration Monitoring

Submitted by atripp on Tue, 12/11/2018 - 09:48

Vegetation growth is important to monitor in areas undergoing restoration. Color imagery collected using an unmanned aircraft system (UAS) at a bottomland hardwood restoration site in northeast Indiana was used to derive a vegetation height model using Structure from Motion (SfM) image processing. Data from that model were then compared to vegetation height data collected in field plots.

UAS Support for Monitoring and Emergency Response Efforts at the Kilauea Volcano

Submitted by atripp on Fri, 12/07/2018 - 14:50

The USGS National Unmanned Aircraft Systems (UAS) Project Office, the USGS Cascades Volcano Center, and Department of the Interior (DOI) Office of Aviation Services (OAS) trained personnel and equipment were deployed on May 17, 2018, to support the remote sensing data acquisition needed for monitoring eruptions of the Kilauea volcano in Hawaii.

DOI Unmanned Aircraft System (UAS) Kīlauea Eruption Response

Submitted by atripp on Fri, 12/07/2018 - 08:46

The 2018 eruption of the Kīlauea volcano in the Hawaiian islands is historically unprecedented in many ways, with explosions and repetitive large-scale collapse events at the volcano’s summit and voluminous lava output in the Lower East Rift Zone (LERZ) that has strongly impacted communities in the lower district of Puna. Additionally, it marks the Federal Government’s first UAS response to a volcanic eruption.

Modeling Land-surface Deformation and Subsidence with UAV Photogrammetry

Submitted by atripp on Thu, 12/06/2018 - 14:16

Accurate assessment of ongoing land subsidence and ground failure requires periodic imaging of the ground surface and reconstruction of topographic changes over multiple timescales. The USGS monitors active land-surface deformation of playas occupying Red Pass and Bicycle Basins in the Mojave Desert to evaluate the influence of tectonic stress, fault barriers to groundwater flow, and declining groundwater levels due to pumping in nearby wells.

Informing Flood Management with Terrain Modeling from UAS-collected Lidar

Submitted by atripp on Thu, 12/06/2018 - 14:08

In 2017, the National Park Service approached the USGS National Unmanned Aircraft Systems (UAS) Project Office to acquire geospatial data in support of developing a flood management plan for the Fort Laramie National Historic Site, Fort Laramie, Wyoming. Originally established as a private fur trading fort in 1834, Fort Laramie evolved into the largest military post on the northern plains and eventually became part of the National Park System in 1938.

Talus and Microclimate Mapping with UAS

Submitted by atripp on Thu, 12/06/2018 - 11:00

New approaches to habitat characterization are needed to address questions about ecosystems effectively and cost-efficiently, particularly in montane ecosystems where rapid changes in community assemblages have coincided with recent warming trends. Talus provides unique and essential habitat for several montane species but is inadequately mapped to support studies of ecosystem dynamics.

Topobathymetric Digital Elevation Model for Pacific Atoll at Risk from Inundation

Submitted by atripp on Tue, 12/04/2018 - 11:20

The lack of Pacific Islands topographic (land elevation) and bathymetric (water depth) information led Department of the Interior (DOI) researchers to use advanced remote sensing technologies to develop a topobathymetric digital elevation model (TBDEM) for Majuro Atoll, Republic of the Marshall Islands. With a maximum natural elevation of only 3 meters (m), Majuro Atoll is extremely vulnerable to changes in sea level, tsunamis, storm surge, and coastal flooding.

Cottonwood-Wilberg Mine, Emery County, Utah Reclamation

Submitted by atripp on Mon, 12/03/2018 - 13:24

The OSMRE Western Region worked with the State of Utah Division of Oil, Gas, and Mining to monitor reclamation efforts at Cottonwood-Wilberg Mine in Emery County, Utah, using remote sensing change detection of historical photography and land use records.  OSMRE purchased high-resolution lidar and orthophotography from Juniper Unmanned of the site before major earthw