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Seafloor Mapping - Geologic framework, hazards, and habitats
Sam Johnson is a Research Geologist in the U.S. Geological Survey Pacific Coastal and Marine Science Center (PCMSC), an organization of about 100 research and support staff based in Santa Cruz and Menlo Park, CA. He served as PCMSC Center Director from 2003 to 2008. He currently designs, coordinates, and conducts research projects that focus on seafloor and benthic habitat mapping, coastal and marine geomorphology and geologic framework, coastal evolution, and coastal earthquake and tsunami hazards. He helped plan and is the USGS lead for the multi-agency California Seafloor Mapping Program. His present research is focused on active tectonics and hazards offshore central California (Santa Barbara Channel to Cape Mendocino).
1982-1984 - Assistant Professor, Washington State University
1984 to 2003 - Research Geologist, USGS Energy and Earthquake Hazards Programs
2003 to 2008 - Center Director, USGS Pacific Coastal and Marine Science Center
2008 to 2019 - Research Geologist, USGS Pacific Coastal and Marine Science Center
2019 to present - Research Geologist Emeritus, USGS Pacific Coastal and Marine Science Center
B.A. (1975) University of California, Santa Cruz (Earth Sciences)
M.S. (1978) University of Washington (Geological Sciences)
Ph.D. (1982) University of Washington Geological Sciences
Geological Society of America (Fellow)
American Geophysical Union
Society for Sedimentary Geology
Seismological Society of America
Department of Interior Distinguished Service Award (2019)
Study of New Offshore Fault Mapping Related to the 1906 San Francisco Earthquake: In 2019, for the first time ever, scientists comprehensively mapped...
Read the news release from the Seismological Society of America, March 27, 2019
USGS research geologist Sam Johnson was invited visit to the Korea Institute of Geoscience and Mineral Industries to present USGS expertise on...
The geological survey of South Africa invited research geologist Sam Johnson of the USGS PCMSC to participate in a workshop, and conference, held in...