Videos

Spring 2014. USGS scientists conduct a health evaluation of a young male polar bear in the Arctic as part of the annual southern Beaufort Sea population survey. The bear is sedated for approximately an hour while the team records a variety of measurements and collects key biological samples.

The minute 319 pulse flow experiment flood in the Lower Colorado River Delta allows scientists the opportunity to study many different aspects of a flood. With the help of CSAs we had the opportunity to actually back calculate the roughness value at the times that our technicians in Yuma measured discharge.

By George Plafker, USGS Geologist Emeritus

Public Lecture on Yellowstone Volcano by Jake Lowenstern at Menlo Park, CA on January 23, 2014. The Q&A at the end of the talk can be found on the original source video (Source URL).

21 January 2014 Lava Lake Spattering at Halema'uma'u Crater The lava lake in the Overlook crater, within Halema'uma'u Crater at Kilauea's summit, undergoes frequent periods of spattering. The spattering is normally at the lake margins, and the surface crust often flows towards, and is consumed at, the spattering source.

Demonstration of the GIS capabilities in ScienceBase, focusing on the uploading of an ESRI service definition file and the creation of an ArcGIS REST service, and how to consume that REST service in outside software applications.

Magnitude 9.2: The 1964 Great Alaska Earthquake is a short video relating how the largest quake in U.S. history had profound and lasting impacts on our lives. The video features USGS geologist George Plafker who, in the 1960's, correctly interpreted the quake as a subduction zone event.

The capabilities of the Great Lakes Science Center's new aquatic wet lab are highlighted. Note:Music: "See You Later" by Pitx featuring Fireproof Babies, Bmccosar. Available at http://ccmixter.org/files/Pitx/17154.

Time-lapse Microgravity Monitoring of Artificial Recharge
This video shows a series of clips collected in 2013 during the SAVSARP gravity experiment.

There were two documented gray fox visits at the burrows, making them the third most documented predator. Gray foxes are implicated predators of various life stages of desert tortoises, but it is difficult to catch them in the act. In this case, a gray fox approaches a burrow, and thoroughly investigates the burrow mouth.

There was one documented skunk event captured on camera - the least documented predator. Here, a western spotted skunk is thoroughly investigating the burrow of one of the marked female tortoises in the study population. Western spotted skunks are known predators of turtle eggs.

Permanent Site: F2 East Transect; Depth: 11.7 Meters (38.3 Feet); Distance from river mouth: 1.5 Kilometers (0.9 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15672004,-123.54969397; Site Description: This video was taken in September, about 40 days after the video on the west transect (F2 West Transect – 2013).

Time lapse video of Angela Tan working in the USGS Sediment Lab Suite and Carbon Analysis Laboratory at the Pacific Coastal and Marine Science Center in Santa Cruz, California.

Permanent Site: L1 East Transect; Depth: 10.3 Meters (33.9 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13957527,-123.59359993; Site Description: This transect is medium depth. Substrate is now mainly fine sediment/sand/mud covered in a layer of brown diatoms (0:09 seconds).

Permanent Site: L1 West Transect; Depth: 11.2 Meters (36.9 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13957527,-123.59427175; Site Description: This transect is medium depth. The first 20 meters contains scattered boulders (0:08 seconds).

Permanent Site: H2 West Transect; Depth: 7.4 Meters (24.3 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15008216,-123.53277857; Site Description: This site is medium to shallow depth.

Permanent Site: H2 East Transect; Depth: 8.0 Meters (26.3 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15008216,-123.53210661; Site Description: This site is medium to shallow depth.

In 1986, Congress directed the USGS to regularly report groundwater-level changes in the High Plains aquifer system. To comply with this directive, the USGS compares water levels measured every two years. By measuring water levels across the entire aquifer in one year, measurements made two years later enable calculation of changes over time.

Permanent Control Site: GP1 East Transect; Depth: 7.2 Meters (23.5 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.11852521,-123.31538047; Site Description: This site was established as the eastern control. Depth is medium-shallow.

Permanent Control Site: GP2 East Transect; Depth: 13.0 Meters (42.8 Feet); Distance from river mouth: 18.8 Kilometers (11.7 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.12781102,-123.31645664; Site Description: This site was established as the eastern control. Substrate is mainly a gravel sand mixture.

Permanent Site: D2 West Transect; Depth: 11.9 Meters (39.0 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15233001,-123.56896603; Site Description: This site is right off the mouth of the river. Substrate is mainly gravel with some sand and cobble. Woody debris is seen (2:13 seconds).