USGS Evening Public Lecture Series
Current Season - 2017 Video Archive
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Unusual Sources of Tsunamis - From Krakatoa to Monterey Bay
by Eric Geist, USGS Research Geophysicist
- Not all tsunamis are generated by earthquakes
- Tsunamis can be caused by volcanoes, landslides, and even atmospheric disturbances
- Data from tide gauges can help unravel the complex physics of these sources
Geology Up-Close: Big answers from small scale observations
by Leslie Hayden-USGS Geologist, Diane Moore-USGS Geologist, Kathryn Watts-USGS Research Geologist, Marjorie Schulz-USGS Research Hydrologist, and Laura Stern-USGS Research Geophysicist
- How does a scanning electron microscope (SEM) work?
- What does USGS study with the SEM? Earthquakes, Volcanoes, Mineral and energy resources, Soil and aquifer processes
Brown Bears, Sea Otters, and Seals, Oh My!: Unexpected interactions on the Katmai Coast
by Grant Hilderbrand, Chief of the Marine Ecosystems Office
- Highlights of ongoing research on brown bears on the coast of the Katmai National Park
- Observations from video collars deployed on brown bears
- Implications for population health and species adaptability
Potential Corrosivity of Untreated Groundwater in the United States
by Kenneth Belitz, Chief, Groundwater Assessment, National Water-Quality Assessment Project
- Corrosive groundwater, if untreated, can dissolve lead and other metals from pipes
- National maps have been prepared to identify the occurrence of potentially corrosive groundwater in the U.S.
- These findings have the greatest implication for the 44 million people dependent on domestic wells for drinking water.
Underwater Secrets of the Hayward Fault Zone: Integrated 3D imaging to understand earthquake hazards
by Janet Watt, USGS Research Geophysicist
- Underwater imaging provides a unique opportunity to study urban fault hazards.
- How do we link surface structures to depths where earthquakes occur?
- How does "acoustic trenching" help us understand earthquake history?
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