Patrick Barnard
Patrick is the Research Director for the Climate Impacts and Coastal Processes Team, which includes overseeing the development and application of the Coastal Storm Modeling System (CoSMoS), coastal monitoring and process-based studies of beaches across California, and research investigating the link between climate variability and coastal hazards across the Pacific Ocean basin.
Dr. Patrick Barnard has been a coastal geologist with the USGS Pacific Coastal and Marine Science Center in Santa Cruz since 2003, and is the Research Director of the Climate Impacts and Coastal Processes Team. His research focuses on storm- and climate-related changes to the beaches and estuaries bordering the Pacific Ocean. His research has been published in over 80 peer-reviewed scientific papers, including Nature, and presented over 100 times at scientific conferences and universities. He serves on numerous regional, national and international scientific review panels related to climate change and coastal hazards. He received a BA from Williams College, MS from University of South Florida, and PhD from UC Riverside.
Science and Products
Filter Total Items: 15
Filter Total Items: 19
No Result Found
Filter Total Items: 134
Nearshore bathymetric evolution on a high-energy beach during the 2009-10 El Nino winter
The nearshore bathymetric evolution of a high-energy beach at the mouth of San Francisco Bay, California (USA), was tracked before, during, and after the powerful El Niño winter of 2009-10 to quantify alongshore bar formation and migration as well as the magnitude and alongshore variability of cross-shore transport. The observed deep-water winter wave energy was among the highest ever...
Authors
Patrick L. Barnard, Daniel J. Hoover, Jeffrey A. Hansen
Small-scale sediment transport patterns and bedform morphodynamics: New insights from high resolution multibeam bathymetry
New multibeam echosounder and processing technologies yield sub-meter-scale bathymetric resolution, revealing striking details of bedform morphology that are shaped by complex boundary-layer flow dynamics at a range of spatial and temporal scales. An inertially aided post processed kinematic (IAPPK) technique generates a smoothed best estimate trajectory (SBET) solution to tie the vessel...
Authors
Patrick L. Barnard, Li H. Erikson, Rikk G. Kvitek
Recent scientific advances and their implications for sand management near San Francisco, California: The influences of the ebb tidal delta
Recent research in the San Francisco, California, U.S.A., coastal region has identified the importance of the ebb tidal delta to coastal processes. A process-based numerical model is found to qualitatively reproduce the equilibrium size and shape of the delta. The ebb tidal delta itself has been contracting over the past century, and the numerical model is applied to investigate the...
Authors
Daniel M. Hanes, Patrick L. Barnard, Kate Dallas, Edwin Elias, Li H. Erikson, Jodi Eshleman, Jeff Hansen, Tian Jian Hsu, Fengyan Shi
A numerical model investigation of the formation and persistence of an erosion hotspot
A Delft3D-SWAN coupled flow and wave model was constructed for the San Francisco Bight with high-resolution at 7 km-long Ocean Beach, a high-energy beach located immediately south of the Golden Gate, the sole entrance to San Francisco Bay. The model was used to investigate tidal and wave-induced flows, basic forcing terms, and potential sediment transport in an area in the southern...
Authors
Jeff E. Hansen, Edwin Elias, Jeffrey H. List, Patrick L. Barnard
Overview of the ARkStorm scenario
The U.S. Geological Survey, Multi Hazards Demonstration Project (MHDP) uses hazards science to improve resiliency of communities to natural disasters including earthquakes, tsunamis, wildfires, landslides, floods and coastal erosion. The project engages emergency planners, businesses, universities, government agencies, and others in preparing for major natural disasters. The project also...
Authors
Keith Porter, Anne Wein, Charles N. Alpers, Allan Baez, Patrick L. Barnard, James Carter, Alessandra Corsi, James Costner, Dale Cox, Tapash Das, Mike Dettinger, James Done, Charles Eadie, Marcia Eymann, Justin Ferris, Prasad Gunturi, Mimi Hughes, Robert Jarrett, Laurie Johnson, Hanh Dam Le-Griffin, David Mitchell, Suzette Morman, Paul Neiman, Anna Olsen, Suzanne Perry, Geoffrey Plumlee, Martin Ralph, David Reynolds, Adam Rose, Kathleen Schaefer, Julie Serakos, William Siembieda, Jonathan D. Stock, David Strong, Ian Sue Wing, Alex Tang, Pete Thomas, Ken Topping, Chris Wills, Lucile Jones
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Earthquake Hazards Program, Science Application for Risk Reduction, Geologic Hazards Science Center, Pacific Coastal and Marine Science Center, Big Sur Landslides, Reducing Risk, San Francisco Bay and Sacramento-San Joaquin Delta Estuary
Anthropogenic influences on shoreline and nearshore evolution in the San Francisco Bay coastal system
Analysis of four historical bathymetric surveys over a 132-year period has revealed significant changes to the morphology of the San Francisco Bar, an ebb-tidal delta at the mouth of San Francisco Bay estuary. From 1873 to 2005 the San Francisco Bar vertically-eroded an average of 80 cm over a 125 km2 area, which equates to a total volume loss of 100 ± 52 million m3 of fine- to coarse...
Authors
K.L. Dallas, P.L. Barnard
Equilibrium shoreline response of a high wave energy beach
Four years of beach elevation surveys at Ocean Beach, San Francisco, California, are used to extend an existing equilibrium shoreline change model, previously calibrated with fine sand and moderate energy waves, to medium sand and higher-energy waves. The shoreline, characterized as the cross-shore location of the mean high water contour, varied seasonally by between 30 and 60 m...
Authors
M.L. Yates, R.T. Guza, W. C. O'Reilly, J.E. Hansen, P.L. Barnard
Pressure-gradient-driven nearshore circulation on a beach influenced by a large inlet-tidal shoal system
The nearshore circulation induced by a focused pattern of surface gravity waves is studied at a beach adjacent to a major inlet with a large ebb tidal shoal. Using a coupled wave and wave-averaged nearshore circulation model, it is found that the nearshore circulation is significantly affected by the heterogeneous wave patterns caused by wave refraction over the ebb tidal shoal. The...
Authors
F. Shi, D.M. Hanes, J.T. Kirby, L. Erikson, P. Barnard, J. Eshleman
Sub-weekly to interannual variability of a high-energy shoreline
Sixty-one Global Positioning System (GPS), sub-aerial beach surveys were completed at 7 km long Ocean Beach, San Francisco, CA (USA), between April 2004 and March 2009. The five-year time series contains over 1 million beach elevation measurements and documents detailed changes in beach morphology over a variety of spatial, temporal, and physical forcing scales. Results show that...
Authors
Jeff E. Hansen, Patrick L. Barnard
A Seamless, High-Resolution, Coastal Digital Elevation Model (DEM) for Southern California
A seamless, 3-meter digital elevation model (DEM) was constructed for the entire Southern California coastal zone, extending 473 km from Point Conception to the Mexican border. The goal was to integrate the most recent, high-resolution datasets available (for example, Light Detection and Ranging (Lidar) topography, multibeam and single beam sonar bathymetry, and Interferometric Synthetic...
Authors
Patrick L. Barnard, Daniel Hoover
Anthropogenic influence on recent bathymetric change in west-central San Francisco Bay
Two multibeam sonar surveys of west-central San Francisco Bay, California, were conducted in 1997 and 2008. Bathymetric change analysis between the two surveys indicates a loss of 14.1 million cubic meters (-3.1 cm/yr) of sediment during this time period, representing an approximately three-fold acceleration of the rate that was observed from prior depth change analysis from 1947 to 1979...
Authors
Patrick L. Barnard, Rikk G. Kvitek
Dramatic beach and nearshore morphological changes due to extreme flooding at a wave-dominated river mouth
Record flooding on the Santa Clara River of California (USA) during January 2005 injected ∼ 5 million m3 of littoral-grade sediment into the Santa Barbara Littoral Cell, approximately an order of magnitude more than both the average annual river loads and the average annual alongshore littoral transport in this portion of the cell. This event appears to be the largest sediment transport...
Authors
P.L. Barnard, J.A. Warrick
Non-USGS Publications**
Barnard, P.L., Owen, L.A. and Finkel, R.C., 2004. Style and timing of glacial and paraglacial sedimentation in a monsoonal-influenced high Himalayan environment, the upper Bhagirathi Valley, Garhwal Himalaya. Sedimentary Geology, Volume 165, p. 199-221, doi:10.1016/j.sedgeo.2003.11.009
Barnard, P.L., Owen, L.A., Sharma, M.C. and Finkel, R.C., 2004. Late Quaternary (Holocene) landscape evolution of a monsoon-influenced high Himalayan valley, Gori Ganga, Nanda Devi, NE Garhwal. Geomorphology, Volume 61 (1-2), p. 91-110, doi:10.1016/j.geomorph.2003.12.002
Barnard, P.L., 2003. The Timing and Nature of Glaciofluvial Erosion and Resedimentation in the Himalaya: the Role of Glacial and Paraglacial Processes in the Evolution of High Mountain Landscapes. Published Ph.D. Thesis, University of California, Riverside, 295 pp.
Davis, R.A., Jr. and Barnard, P.L., 2003. Morphodynamics of the barrier-inlet system, west-central Florida. Marine Geology, Volume 200 (1-4), p. 77-101, doi:10.1016/S0025-3227(03)00178-6
Finkel, R.C., Owen, L.A., Barnard, P.L. and Caffee, M.W., 2003. Beryllium-10 dating of Mount Everest moraines indicates a strong monsoonal influence and glacial synchroneity throughout the Himalaya. Geology, Volume 31, p. 561-564, doi:10.1130/0091-7613(2003)031<0561:BDOMEM>2.0.CO;2
Owen, L.A., Finkel, R.C., Ma, H., Spencer, J.Q., Derbyshire, E., Barnard, P.L. and Caffee, M.W., 2003. Timing and style of Late Quaternary glaciation in northeastern Tibet. Geological Society of America Bulletin, Volume 115 (11), p. 1356-1364, doi:10.1130/B25314.1
Owen, L.A., Ma, H., Derbyshire, E., Spencer, J.Q., Barnard, P.L., Zeng, Y.N., Finkel, R.C. and Caffee, M.W., 2003. The timing and style of Late Quaternary glaciation in the La Ji Mountains, NE Tibet: evidence for restricted glaciation during the latter part of the Last Glacial. Zeitschrift für Geomorphologie, Supplemental Volume 130, p. 263-276, ISBN 978-3-443-21130-1
Owen, L.A., Spencer, J.Q., Ma, H., Barnard, P.L., Derbyshire, E., Finkel, R.C., Caffee, M.W. and Zeng, Y.N., 2003. Timing of Late Quaternary glaciation along the southwestern slopes of the Qilian Shan, Tibet. Boreas, Volume 32, p. 281-291, doi:10.1111/j.1502-3885.2003.tb01083.x
Van der Woerd, J., Owen, L.A., Tapponnier, P., Xiwei, X., Kervyn, F., Finkel, R.C. and Barnard, P.L., 2003. Giant, ~M8 earthquake-triggered ice avalanches in the eastern Kunlun Shan, Northern Tibet: characteristics, nature and dynamics. Geological Society of America Bulletin, Volume 116 (3), p. 394-406, doi:10.1130/B25317.1
Barnard, P.L., Owen, L.A., Sharma, M.C. and Finkel, R.C., 2001. Natural and human-induced landsliding in the Garhwal Himalaya of Northern India. Geomorphology, Volume 40, p. 21-35, doi:10.1016/S0169-555X(01)00035-6
Davis, R.A., Jr. and Barnard, P.L., 2000. How anthropogenic factors in the back-barrier influence tidal inlet stability: examples from the Gulf Coast of Florida, USA. In: Pye, K. and Allen, J.R.L. (Eds.), Coastal and Estuarine Environments: sedimentology, geomorphology and geoarchaeology. Geological Society, London, Special Publication Number 175, p. 293-303, doi:10.1144/GSL.SP.2000.175.01.21
Barnard, P.L. and Owen, L.A., 2000. A selected bibliography for Late Quaternary glaciation in Tibet and Bordering Mountains. Quaternary International, Volume 65/66, p. 193-212
Barnard, P.L. and Davis, R.A., Jr., 1999. Anthropogenic vs. natural influences on inlet evolution: west-central Florida. Coastal Sediments ’99 Conference Proceedings, Fire Island, New York, Volume 2, p. 1489-1504
Barnard, P.L., 1998. Historical Morphodynamics of Inlet Channels: West-Central Florida. Master’s Thesis, University of South Florida, 179 pp.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Filter Total Items: 30
Science and Products
Filter Total Items: 15
Filter Total Items: 19
No Result Found
Filter Total Items: 134
Nearshore bathymetric evolution on a high-energy beach during the 2009-10 El Nino winter
The nearshore bathymetric evolution of a high-energy beach at the mouth of San Francisco Bay, California (USA), was tracked before, during, and after the powerful El Niño winter of 2009-10 to quantify alongshore bar formation and migration as well as the magnitude and alongshore variability of cross-shore transport. The observed deep-water winter wave energy was among the highest ever...
Authors
Patrick L. Barnard, Daniel J. Hoover, Jeffrey A. Hansen
Small-scale sediment transport patterns and bedform morphodynamics: New insights from high resolution multibeam bathymetry
New multibeam echosounder and processing technologies yield sub-meter-scale bathymetric resolution, revealing striking details of bedform morphology that are shaped by complex boundary-layer flow dynamics at a range of spatial and temporal scales. An inertially aided post processed kinematic (IAPPK) technique generates a smoothed best estimate trajectory (SBET) solution to tie the vessel...
Authors
Patrick L. Barnard, Li H. Erikson, Rikk G. Kvitek
Recent scientific advances and their implications for sand management near San Francisco, California: The influences of the ebb tidal delta
Recent research in the San Francisco, California, U.S.A., coastal region has identified the importance of the ebb tidal delta to coastal processes. A process-based numerical model is found to qualitatively reproduce the equilibrium size and shape of the delta. The ebb tidal delta itself has been contracting over the past century, and the numerical model is applied to investigate the...
Authors
Daniel M. Hanes, Patrick L. Barnard, Kate Dallas, Edwin Elias, Li H. Erikson, Jodi Eshleman, Jeff Hansen, Tian Jian Hsu, Fengyan Shi
A numerical model investigation of the formation and persistence of an erosion hotspot
A Delft3D-SWAN coupled flow and wave model was constructed for the San Francisco Bight with high-resolution at 7 km-long Ocean Beach, a high-energy beach located immediately south of the Golden Gate, the sole entrance to San Francisco Bay. The model was used to investigate tidal and wave-induced flows, basic forcing terms, and potential sediment transport in an area in the southern...
Authors
Jeff E. Hansen, Edwin Elias, Jeffrey H. List, Patrick L. Barnard
Overview of the ARkStorm scenario
The U.S. Geological Survey, Multi Hazards Demonstration Project (MHDP) uses hazards science to improve resiliency of communities to natural disasters including earthquakes, tsunamis, wildfires, landslides, floods and coastal erosion. The project engages emergency planners, businesses, universities, government agencies, and others in preparing for major natural disasters. The project also...
Authors
Keith Porter, Anne Wein, Charles N. Alpers, Allan Baez, Patrick L. Barnard, James Carter, Alessandra Corsi, James Costner, Dale Cox, Tapash Das, Mike Dettinger, James Done, Charles Eadie, Marcia Eymann, Justin Ferris, Prasad Gunturi, Mimi Hughes, Robert Jarrett, Laurie Johnson, Hanh Dam Le-Griffin, David Mitchell, Suzette Morman, Paul Neiman, Anna Olsen, Suzanne Perry, Geoffrey Plumlee, Martin Ralph, David Reynolds, Adam Rose, Kathleen Schaefer, Julie Serakos, William Siembieda, Jonathan D. Stock, David Strong, Ian Sue Wing, Alex Tang, Pete Thomas, Ken Topping, Chris Wills, Lucile Jones
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Earthquake Hazards Program, Science Application for Risk Reduction, Geologic Hazards Science Center, Pacific Coastal and Marine Science Center, Big Sur Landslides, Reducing Risk, San Francisco Bay and Sacramento-San Joaquin Delta Estuary
Anthropogenic influences on shoreline and nearshore evolution in the San Francisco Bay coastal system
Analysis of four historical bathymetric surveys over a 132-year period has revealed significant changes to the morphology of the San Francisco Bar, an ebb-tidal delta at the mouth of San Francisco Bay estuary. From 1873 to 2005 the San Francisco Bar vertically-eroded an average of 80 cm over a 125 km2 area, which equates to a total volume loss of 100 ± 52 million m3 of fine- to coarse...
Authors
K.L. Dallas, P.L. Barnard
Equilibrium shoreline response of a high wave energy beach
Four years of beach elevation surveys at Ocean Beach, San Francisco, California, are used to extend an existing equilibrium shoreline change model, previously calibrated with fine sand and moderate energy waves, to medium sand and higher-energy waves. The shoreline, characterized as the cross-shore location of the mean high water contour, varied seasonally by between 30 and 60 m...
Authors
M.L. Yates, R.T. Guza, W. C. O'Reilly, J.E. Hansen, P.L. Barnard
Pressure-gradient-driven nearshore circulation on a beach influenced by a large inlet-tidal shoal system
The nearshore circulation induced by a focused pattern of surface gravity waves is studied at a beach adjacent to a major inlet with a large ebb tidal shoal. Using a coupled wave and wave-averaged nearshore circulation model, it is found that the nearshore circulation is significantly affected by the heterogeneous wave patterns caused by wave refraction over the ebb tidal shoal. The...
Authors
F. Shi, D.M. Hanes, J.T. Kirby, L. Erikson, P. Barnard, J. Eshleman
Sub-weekly to interannual variability of a high-energy shoreline
Sixty-one Global Positioning System (GPS), sub-aerial beach surveys were completed at 7 km long Ocean Beach, San Francisco, CA (USA), between April 2004 and March 2009. The five-year time series contains over 1 million beach elevation measurements and documents detailed changes in beach morphology over a variety of spatial, temporal, and physical forcing scales. Results show that...
Authors
Jeff E. Hansen, Patrick L. Barnard
A Seamless, High-Resolution, Coastal Digital Elevation Model (DEM) for Southern California
A seamless, 3-meter digital elevation model (DEM) was constructed for the entire Southern California coastal zone, extending 473 km from Point Conception to the Mexican border. The goal was to integrate the most recent, high-resolution datasets available (for example, Light Detection and Ranging (Lidar) topography, multibeam and single beam sonar bathymetry, and Interferometric Synthetic...
Authors
Patrick L. Barnard, Daniel Hoover
Anthropogenic influence on recent bathymetric change in west-central San Francisco Bay
Two multibeam sonar surveys of west-central San Francisco Bay, California, were conducted in 1997 and 2008. Bathymetric change analysis between the two surveys indicates a loss of 14.1 million cubic meters (-3.1 cm/yr) of sediment during this time period, representing an approximately three-fold acceleration of the rate that was observed from prior depth change analysis from 1947 to 1979...
Authors
Patrick L. Barnard, Rikk G. Kvitek
Dramatic beach and nearshore morphological changes due to extreme flooding at a wave-dominated river mouth
Record flooding on the Santa Clara River of California (USA) during January 2005 injected ∼ 5 million m3 of littoral-grade sediment into the Santa Barbara Littoral Cell, approximately an order of magnitude more than both the average annual river loads and the average annual alongshore littoral transport in this portion of the cell. This event appears to be the largest sediment transport...
Authors
P.L. Barnard, J.A. Warrick
Non-USGS Publications**
Barnard, P.L., Owen, L.A. and Finkel, R.C., 2004. Style and timing of glacial and paraglacial sedimentation in a monsoonal-influenced high Himalayan environment, the upper Bhagirathi Valley, Garhwal Himalaya. Sedimentary Geology, Volume 165, p. 199-221, doi:10.1016/j.sedgeo.2003.11.009
Barnard, P.L., Owen, L.A., Sharma, M.C. and Finkel, R.C., 2004. Late Quaternary (Holocene) landscape evolution of a monsoon-influenced high Himalayan valley, Gori Ganga, Nanda Devi, NE Garhwal. Geomorphology, Volume 61 (1-2), p. 91-110, doi:10.1016/j.geomorph.2003.12.002
Barnard, P.L., 2003. The Timing and Nature of Glaciofluvial Erosion and Resedimentation in the Himalaya: the Role of Glacial and Paraglacial Processes in the Evolution of High Mountain Landscapes. Published Ph.D. Thesis, University of California, Riverside, 295 pp.
Davis, R.A., Jr. and Barnard, P.L., 2003. Morphodynamics of the barrier-inlet system, west-central Florida. Marine Geology, Volume 200 (1-4), p. 77-101, doi:10.1016/S0025-3227(03)00178-6
Finkel, R.C., Owen, L.A., Barnard, P.L. and Caffee, M.W., 2003. Beryllium-10 dating of Mount Everest moraines indicates a strong monsoonal influence and glacial synchroneity throughout the Himalaya. Geology, Volume 31, p. 561-564, doi:10.1130/0091-7613(2003)031<0561:BDOMEM>2.0.CO;2
Owen, L.A., Finkel, R.C., Ma, H., Spencer, J.Q., Derbyshire, E., Barnard, P.L. and Caffee, M.W., 2003. Timing and style of Late Quaternary glaciation in northeastern Tibet. Geological Society of America Bulletin, Volume 115 (11), p. 1356-1364, doi:10.1130/B25314.1
Owen, L.A., Ma, H., Derbyshire, E., Spencer, J.Q., Barnard, P.L., Zeng, Y.N., Finkel, R.C. and Caffee, M.W., 2003. The timing and style of Late Quaternary glaciation in the La Ji Mountains, NE Tibet: evidence for restricted glaciation during the latter part of the Last Glacial. Zeitschrift für Geomorphologie, Supplemental Volume 130, p. 263-276, ISBN 978-3-443-21130-1
Owen, L.A., Spencer, J.Q., Ma, H., Barnard, P.L., Derbyshire, E., Finkel, R.C., Caffee, M.W. and Zeng, Y.N., 2003. Timing of Late Quaternary glaciation along the southwestern slopes of the Qilian Shan, Tibet. Boreas, Volume 32, p. 281-291, doi:10.1111/j.1502-3885.2003.tb01083.x
Van der Woerd, J., Owen, L.A., Tapponnier, P., Xiwei, X., Kervyn, F., Finkel, R.C. and Barnard, P.L., 2003. Giant, ~M8 earthquake-triggered ice avalanches in the eastern Kunlun Shan, Northern Tibet: characteristics, nature and dynamics. Geological Society of America Bulletin, Volume 116 (3), p. 394-406, doi:10.1130/B25317.1
Barnard, P.L., Owen, L.A., Sharma, M.C. and Finkel, R.C., 2001. Natural and human-induced landsliding in the Garhwal Himalaya of Northern India. Geomorphology, Volume 40, p. 21-35, doi:10.1016/S0169-555X(01)00035-6
Davis, R.A., Jr. and Barnard, P.L., 2000. How anthropogenic factors in the back-barrier influence tidal inlet stability: examples from the Gulf Coast of Florida, USA. In: Pye, K. and Allen, J.R.L. (Eds.), Coastal and Estuarine Environments: sedimentology, geomorphology and geoarchaeology. Geological Society, London, Special Publication Number 175, p. 293-303, doi:10.1144/GSL.SP.2000.175.01.21
Barnard, P.L. and Owen, L.A., 2000. A selected bibliography for Late Quaternary glaciation in Tibet and Bordering Mountains. Quaternary International, Volume 65/66, p. 193-212
Barnard, P.L. and Davis, R.A., Jr., 1999. Anthropogenic vs. natural influences on inlet evolution: west-central Florida. Coastal Sediments ’99 Conference Proceedings, Fire Island, New York, Volume 2, p. 1489-1504
Barnard, P.L., 1998. Historical Morphodynamics of Inlet Channels: West-Central Florida. Master’s Thesis, University of South Florida, 179 pp.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Filter Total Items: 30