Janet Watt
My research focuses on characterizing onshore/offshore geologic structure, deformation, and active tectonics to address problems focused on geologic hazards and framework geologic processes. My recent work involves the development and application of integrative geophysical approaches to 3D characterization of faults and fault interactions.
I received my M.S. in Marine Science (Geological Oceanography) from Moss Landing Marine Laboratories while working at the USGS in Menlo Park, CA. As part of the Geophysical Unit of Menlo Park (GUMP), I used potential-field methods (gravity and magnetics) and 3D geologic mapping to understand earthquake and volcano hazards, and mineral and water resources in the western U.S. In 2010, I returned to my marine geology roots and joined the Pacific Coastal and Marine Science Center in Santa Cruz, CA where I currently work as a Research Geophysicist.
Selected Media and Public Outreach
November 18, 2016, CBS This Morning "California prepares for next big earthquake"
October 19, 2016, Popular Mechanics "Two dangerous Fault Lines Under San Francisco Are Connected, Study Finds"
February 1, 2016, Temblor.net Earthquake News & Blog, "Why don't the earthquakes line up with the San Andreas fault?"
January 2, 2016, CBS NEWS, "Alarming Discovery Shows Bay Area’s 2 Most Dangerous Earthquake Faults May Be Connected"
December 31, 2015, San Francisco Chronicle, "New data on 2 Bay Area faults cause worry about next big quake"
November 20, 2014, KQED Science "Using 3D Visualization, Geologists Explore the Complex Areas Where Faults Join and Split"
Science and Products
California State Waters map series — Offshore of Scott Creek, California
California State Waters Map Series — Offshore of Bodega Head, California
California State Waters Map Series — Offshore of Bolinas, California
California State Waters Map Series — Offshore of Point Reyes, California
California State Waters Map Series — Offshore of Salt Point, California
California State Waters Map Series — Offshore of Tomales Point, California
California State Waters Map Series — Drakes Bay and vicinity, California
California State Waters Map Series — Offshore of San Francisco, California
California State Waters Map Series — Offshore of Pacifica, California
California State Waters Map Series — Offshore of Half Moon Bay, California
Subsurface geometry of the San Andreas-Calaveras fault junction: Influence of serpentinite and the Coast Range Ophiolite
High-resolution seismic-reflection and marine-magnetic data from offshore central California--San Gregorio to Point Sur
Science and Products
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California State Waters map series — Offshore of Scott Creek, California
Introduction In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interprAuthorsGuy R. Cochrane, Peter Dartnell, Samuel Y. Johnson, H. Gary Greene, Mercedes D. Erdey, Bryan E. Dieter, Nadine E. Golden, Charles A. Endris, Stephen R. Hartwell, Rikk G. Kvitek, Clifton W. Davenport, Janet Watt, Lisa M. Krigsman, Andrew C. Ritchie, Ray W. Sliter, David P. Finlayson, Katherine L. MaierCalifornia State Waters Map Series — Offshore of Bodega Head, California
Introduction In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interprAuthorsSamuel Y. Johnson, Peter Dartnell, Nadine E. Golden, Stephen R. Hartwell, Mercedes D. Erdey, H. Gary Greene, Guy R. Cochrane, Rikk G. Kvitek, Michael W. Manson, Charles A. Endris, Bryan E. Dieter, Janet Watt, Lisa M. Krigsman, Ray W. Sliter, Erik N. Lowe, John L. ChinCalifornia State Waters Map Series — Offshore of Bolinas, California
Introduction In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interprAuthorsGuy R. Cochrane, Peter Dartnell, Samuel Y. Johnson, H. Gary Greene, Mercedes D. Erdey, Nadine E. Golden, Stephen R. Hartwell, Michael W. Manson, Ray W. Sliter, Charles A. Endris, Janet Watt, Stephanie L. Ross, Rikk G. Kvitek, Eleyne L. Phillips, Terry R. Bruns, John L. ChinCalifornia State Waters Map Series — Offshore of Point Reyes, California
This publication about the Offshore of Point Reyes map area includes ten map sheets that contain explanatory text, in addition to this descriptive pamphlet and a data catalog of geographic information system (GIS) files. Sheets 1, 2, and 3 combine data from four different sonar surveys to generate comprehensive high-resolution bathymetry and acoustic-backscatter coverage of the map area. These datAuthorsJanet Watt, Peter Dartnell, Nadine E. Golden, H. Gary Greene, Mercedes D. Erdey, Guy R. Cochrane, Samuel Y. Johnson, Stephen R. Hartwell, Rikk G. Kvitek, Michael W. Manson, Charles A. Endris, Bryan E. Dieter, Ray W. Sliter, Lisa M. Krigsman, Erik Lowe, John L. ChinnCalifornia State Waters Map Series — Offshore of Salt Point, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, andAuthorsSamuel Y. Johnson, Peter Dartnell, Nadine E. Golden, Stephen R. Hartwell, Mercedes D. Erdey, H. Gary Greene, Guy R. Cochrane, Rikk G. Kvitek, Michael W. Manson, Charles A. Endris, Bryan E. Dieter, Janet Watt, Lisa M. Krigsman, Ray W. Sliter, Erik N. Lowe, John L. ChinnCalifornia State Waters Map Series — Offshore of Tomales Point, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, andAuthorsSamuel Y. Johnson, Peter Dartnell, Nadine E. Golden, Stephen R. Hartwell, H. Gary Greene, Mercedes D. Erdey, Guy R. Cochrane, Janet Tilden Watt, Rikk G. Kvitek, Michael W. Manson, Charles A. Endris, Bryan E. Dieter, Lisa M. Krigsman, Ray W. Sliter, Erik N. Lowe, John L. ChinnCalifornia State Waters Map Series — Drakes Bay and vicinity, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, andAuthorsJanet Watt, Peter Dartnell, Nadine E. Golden, H. Gary Greene, Mercedes D. Erdey, Guy R. Cochrane, Samuel Y. Johnson, Stephen R. Hartwell, Rikk G. Kvitek, Michael W. Manson, Charles A. Endris, Bryan E. Dieter, Ray W. Sliter, Lisa M. Krigsman, Erik N. Lowe, John L. ChinnCalifornia State Waters Map Series — Offshore of San Francisco, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and visualization of swath sonarAuthorsGuy R. Cochrane, Samuel Y. Johnson, Peter Dartnell, H. Gary Greene, Mercedes D. Erdey, Nadine E. Golden, Stephen R. Hartwell, Charles A. Endris, Michael W. Manson, Ray W. Sliter, Rikk G. Kvitek, Janet Tilden Watt, Stephanie L. Ross, Terry R. BrunsCalifornia State Waters Map Series — Offshore of Pacifica, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, andAuthorsBrian D. Edwards, Eleyne L. Phillips, Peter Dartnell, H. Gary Greene, Carrie K. Bretz, Rikk G. Kvitek, Stephen R. Hartwell, Samuel Y. Johnson, Guy R. Cochrane, Bryan E. Dieter, Ray W. Sliter, Stephanie L. Ross, Nadine E. Golden, Janet Tilden Watt, John L. Chinn, Mercedes D. Erdey, Lisa M. Krigsman, Michael W. Manson, Charles A. EndrisCalifornia State Waters Map Series — Offshore of Half Moon Bay, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, andAuthorsGuy R. Cochrane, Peter Dartnell, H. Gary Greene, Samuel Y. Johnson, Nadine E. Golden, Stephen R. Hartwell, Bryan E. Dieter, Michael W. Manson, Ray W. Sliter, Stephanie L. Ross, Janet Watt, Charles A. Endris, Rikk G. Kvitek, Eleyne L. Phillips, Mercedes D. Erdey, John L. Chin, Carrie K. BretzSubsurface geometry of the San Andreas-Calaveras fault junction: Influence of serpentinite and the Coast Range Ophiolite
While an enormous amount of research has been focused on trying to understand the geologic history and neotectonics of the San Andreas-Calaveras fault (SAF-CF) junction, fundamental questions concerning fault geometry and mechanisms for slip transfer through the junction remain. We use potential-field, geologic, geodetic, and seismicity data to investigate the 3-D geologic framework of the SAF-CFAuthorsJanet Tilden Watt, David A. Ponce, Russell W. Graymer, Robert C. Jachens, Robert W. SimpsonHigh-resolution seismic-reflection and marine-magnetic data from offshore central California--San Gregorio to Point Sur
The U.S. Geological Survey collected high-resolution seismic-reflection data on four surveys (S-N1-09-MB, S-15-10-NC, S-06-11-MB, and S-04-12-MB) and marine-magnetic data on one survey (S-06-11-MB) between 2009 and 2012, offshore of central California between San Gregorio and Point Sur. This work was supported in part by the California Seafloor Mapping Program. The survey areas span about 120 kmAuthorsRay W. Sliter, Samuel Y. Johnson, Janet T. Watt, Daniel S. Scheirer, Parker Allwardt, Peter J. Triezenberg - News