Patrick Barnard (Former Employee)
Science and Products
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Monitoring and modeling nearshore dredge disposal for indirect beach nourishment, Ocean Beach, San Francisco Monitoring and modeling nearshore dredge disposal for indirect beach nourishment, Ocean Beach, San Francisco
Nearshore dredge disposal was performed during the summer of 2005 at Ocean Beach, San Francisco, CA, a high energy tidal and wave environment. This trial run was an attempt to provide a buffer to a reach of coastline where wave attack during the winter months has had a severe impact on existing sewage infrastructure. Although the subsequent beach response was inconclusive, after one year...
Authors
Patrick L. Barnard, Daniel M. Hanes, Jamie Lescinski, Edwin Elias
Coupling alongshore variations in wave energy to beach morphologic change using the SWAN wave model at Ocean Beach, San Francisco, CA Coupling alongshore variations in wave energy to beach morphologic change using the SWAN wave model at Ocean Beach, San Francisco, CA
Coastal managers have faced increasing pressure to manage their resources wisely over the last century as a result of heightened development and changing environmental forcing. It is crucial to understand seasonal changes in beach volume and shape in order to identify areas vulnerable to accelerated erosion. Shepard (1950) was among the first to quantify seasonal beach cycles. Sonu and...
Authors
Jodi L. Eshleman, Patrick L. Barnard, Li H. Erikson, Daniel M. Hanes
Swash zone characteristics at Ocean Beach, San Francisco, CA Swash zone characteristics at Ocean Beach, San Francisco, CA
Runup data collected during the summer of 2005 at Ocean Beach, San Francisco, CA are analyzed and considered to be typical summer swash characteristics at this site. Analysis shows that the beach was dissipative with Iribarren numbers between 0.05 and 0.4 and that infragravity energy dominated. Foreshore slopes were mild between 0.01 and 0.05 with swash periods on the order of a minute...
Authors
L. H. Erikson, D.M. Hanes, P.L. Barnard, A. E. Gibbs
Field test comparison of an autocorrelation technique for determining grain size using a digital 'beachball' camera versus traditional methods Field test comparison of an autocorrelation technique for determining grain size using a digital 'beachball' camera versus traditional methods
This extensive field test of an autocorrelation technique for determining grain size from digital images was conducted using a digital bed-sediment camera, or 'beachball' camera. Using 205 sediment samples and >1200 images from a variety of beaches on the west coast of the US, grain size ranging from sand to granules was measured from field samples using both the autocorrelation...
Authors
P.L. Barnard, D. M. Rubin, J. Harney, N. Mustain
A rapid compatibility analysis of potential offshore sand sources for beaches of the Santa Barbara Littoral Cell A rapid compatibility analysis of potential offshore sand sources for beaches of the Santa Barbara Littoral Cell
The beaches of the Santa Barbara Littoral Cell, which are narrow as a result of either natural and/or anthropogenic factors, may benefit from nourishment. Sand compatibility is fundamental to beach nourishment success and grain size is the parameter often used to evaluate equivalence. Only after understanding which sand sizes naturally compose beaches in a specific cell, especially the...
Authors
N. Mustain, G. Griggs, P.L. Barnard
Coastal monitoring of the May 2005 dredge disposal offshore of Ocean Beach, San Francisco, Calif. Coastal monitoring of the May 2005 dredge disposal offshore of Ocean Beach, San Francisco, Calif.
Ocean Beach, California, contains an erosion hot spot in the shadow of the San Francisco ebb tidal delta south of Sloat Boulevard that threatens valuable public infrastructure as well as the safe recreational use of the beach. In an effort to reduce the erosion at this location and avoid hazardous navigation conditions at the current disposal site (SF-8), a new plan for the management of...
Authors
Patrick L. Barnard, Daniel M. Hanes
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.
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Science and Products
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Filter Total Items: 139
Monitoring and modeling nearshore dredge disposal for indirect beach nourishment, Ocean Beach, San Francisco Monitoring and modeling nearshore dredge disposal for indirect beach nourishment, Ocean Beach, San Francisco
Nearshore dredge disposal was performed during the summer of 2005 at Ocean Beach, San Francisco, CA, a high energy tidal and wave environment. This trial run was an attempt to provide a buffer to a reach of coastline where wave attack during the winter months has had a severe impact on existing sewage infrastructure. Although the subsequent beach response was inconclusive, after one year...
Authors
Patrick L. Barnard, Daniel M. Hanes, Jamie Lescinski, Edwin Elias
Coupling alongshore variations in wave energy to beach morphologic change using the SWAN wave model at Ocean Beach, San Francisco, CA Coupling alongshore variations in wave energy to beach morphologic change using the SWAN wave model at Ocean Beach, San Francisco, CA
Coastal managers have faced increasing pressure to manage their resources wisely over the last century as a result of heightened development and changing environmental forcing. It is crucial to understand seasonal changes in beach volume and shape in order to identify areas vulnerable to accelerated erosion. Shepard (1950) was among the first to quantify seasonal beach cycles. Sonu and...
Authors
Jodi L. Eshleman, Patrick L. Barnard, Li H. Erikson, Daniel M. Hanes
Swash zone characteristics at Ocean Beach, San Francisco, CA Swash zone characteristics at Ocean Beach, San Francisco, CA
Runup data collected during the summer of 2005 at Ocean Beach, San Francisco, CA are analyzed and considered to be typical summer swash characteristics at this site. Analysis shows that the beach was dissipative with Iribarren numbers between 0.05 and 0.4 and that infragravity energy dominated. Foreshore slopes were mild between 0.01 and 0.05 with swash periods on the order of a minute...
Authors
L. H. Erikson, D.M. Hanes, P.L. Barnard, A. E. Gibbs
Field test comparison of an autocorrelation technique for determining grain size using a digital 'beachball' camera versus traditional methods Field test comparison of an autocorrelation technique for determining grain size using a digital 'beachball' camera versus traditional methods
This extensive field test of an autocorrelation technique for determining grain size from digital images was conducted using a digital bed-sediment camera, or 'beachball' camera. Using 205 sediment samples and >1200 images from a variety of beaches on the west coast of the US, grain size ranging from sand to granules was measured from field samples using both the autocorrelation...
Authors
P.L. Barnard, D. M. Rubin, J. Harney, N. Mustain
A rapid compatibility analysis of potential offshore sand sources for beaches of the Santa Barbara Littoral Cell A rapid compatibility analysis of potential offshore sand sources for beaches of the Santa Barbara Littoral Cell
The beaches of the Santa Barbara Littoral Cell, which are narrow as a result of either natural and/or anthropogenic factors, may benefit from nourishment. Sand compatibility is fundamental to beach nourishment success and grain size is the parameter often used to evaluate equivalence. Only after understanding which sand sizes naturally compose beaches in a specific cell, especially the...
Authors
N. Mustain, G. Griggs, P.L. Barnard
Coastal monitoring of the May 2005 dredge disposal offshore of Ocean Beach, San Francisco, Calif. Coastal monitoring of the May 2005 dredge disposal offshore of Ocean Beach, San Francisco, Calif.
Ocean Beach, California, contains an erosion hot spot in the shadow of the San Francisco ebb tidal delta south of Sloat Boulevard that threatens valuable public infrastructure as well as the safe recreational use of the beach. In an effort to reduce the erosion at this location and avoid hazardous navigation conditions at the current disposal site (SF-8), a new plan for the management of...
Authors
Patrick L. Barnard, Daniel M. Hanes
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: 32