Bruce Jaffe (Former Employee)
Science and Products
Filter Total Items: 15
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Filter Total Items: 89
Estuarine sedimentation, sediment character, and foraminiferal distribution in central San Francisco Bay, California
Central San Francisco Bay is the deepest subembayment in the San Francisco Bay estuary and hence has the largest water volume of any of the subembayments. It also has the strongest tidal currents and the coarsest sediment within the estuary. Tidal currents are strongest over the west-central part of central bay and, correspondingly, this area is dominated by sand-size sediment. Much of the area ea
Authors
John L. Chin, Donald L. Woodrow, Mary McGann, Florence L. Wong, Theresa A. Fregoso, Bruce E. Jaffe
Field survey of the Samoa tsunami of 29 September 2009
On 29 September 2009, a strong earthquake took place south of the Samoa Islands in the southcentral Pacific. It triggered a local tsunami, which caused considerable damage and 189 fatalities on the Samoa Islands and in the northern Tonga archipelago. We present here the results of a tsunami survey conducted by an International Tsunami Survey Team in the Samoa Islands on 4-10 October 2009 and in no
Authors
Emile A. Okal, Hermann M. Fritz, Costas E. Synolakis, José C. Borrero, Robert Weiss, Patrick J. Lynett, Vasily V. Titov, Spyros Foteinis, Bruce E. Jaffe, Philip L-F. Liu, I-Chi Chan
The Limit of Inundation of the September 29, 2009, Tsunami on Tutuila, American Samoa
U.S. Geological Survey scientists investigated the coastal impacts of the September 29, 2009, South Pacific tsunami in Tutuila, American Samoa in October and November 2009, including mapping the alongshore variation in the limit of inundation. Knowing the inundation limit is useful for planning safer coastal development and evacuation routes for future tsunamis and for improving models of tsunami
Authors
Bruce E. Jaffe, Guy Gelfenbaum, Mark L. Buckley, Steve Watt, Alex Apotsos, Andrew W. Stevens, Bruce M. Richmond
Mercury-contaminated hydraulic mining debris in San Francisco Bay
The hydraulic gold-mining process used during the California Gold Rush and in many developing countries today contributes enormous amounts of sediment to rivers and streams. Commonly, accompanying this sediment are contaminants such as elemental mercury and cyanide used in the gold extraction process. We show that some of the mercurycontaminated sediment created by hydraulic gold mining in the Sie
Authors
Robin M. Bouse, Christopher C. Fuller, Samuel N. Luoma, Michelle I. Hornberger, Bruce E. Jaffe, Richard E. Smith
Hindcasting of decadal‐timescale estuarine bathymetric change with a tidal‐timescale model
Hindcasting decadal-timescale bathymetric change in estuaries is prone to error due to limited data for initial conditions, boundary forcing, and calibration; computational limitations further hinder efforts. We developed and calibrated a tidal-timescale model to bathymetric change in Suisun Bay, California, over the 1867–1887 period. A general, multiple-timescale calibration ensured robustness ov
Authors
Neil K. Ganju, David H. Schoellhamer, Bruce E. Jaffe
Sediment deposition, erosion, and bathymetric change in central San Francisco Bay: 1855-1979
Central San Francisco Bay is the hub of a dynamic estuarine system connecting the San Joaquin and Sacramento River Deltas, Suisun Bay, and San Pablo Bay to the Pacific Ocean and South San Francisco Bay. To understand the role that Central San Francisco Bay plays in sediment transport throughout the system, it is necessary to first determine historical changes in patterns of sediment deposition and
Authors
Theresa A. Fregoso, Amy C. Foxgrover, Bruce E. Jaffe
2005 hydrographic survey of south San Francisco Bay, California
An acoustic hydrographic survey of South San Francisco Bay (South Bay) was conducted in 2005. Over 20 million soundings were collected within an area of approximately 250 sq km (97 sq mi) of the bay extending south of Coyote Point on the west shore, to the San Leandro marina on the east, including Coyote Creek and Ravenswood, Alviso, Artesian, and Mud Sloughs. This is the first survey of this scal
Authors
Amy C. Foxgrover, Bruce E. Jaffe, Gerald T. Hovis, Craig A. Martin, James R. Hubbard, Manoj R. Samant, Steve M. Sullivan
Reconstructing sediment age profiles from historical bathymetry changes in San Pablo Bay, California
Sediment age profiles reconstructed from a sequence of historical bathymetry changes are used to investigate the subsurface distribution of historical sediments in a subembayment of the San Francisco Estuary. Profiles are created in a grid-based GIS modeling program that stratifies historical deposition into temporal horizons. The model's reconstructions are supported by comparisons to profiles of
Authors
Shawn A. Higgins, Bruce E. Jaffe, Christopher C. Fuller
Physical criteria for distinguishing sandy tsunami and storm deposits using modern examples
Modern subaerial sand beds deposited by major tsunamis and hurricanes were compared at trench, transect, and sub-regional spatial scales to evaluate which attributes are most useful for distinguishing the two types of deposits. Physical criteria that may be diagnostic include: sediment composition, textures and grading, types and organization of stratification, thickness, geometry, and landscape c
Authors
Robert A. Morton, Guy Gelfenbaum, Bruce E. Jaffe
Reconnaissance investigation of Caribbean extreme wave deposits — Preliminary observations, interpretations, and research directions
This report presents an overview of preliminary geological investigations and recommended future research activities in the Caribbean region pertaining to coastal hazards with an emphasis on establishing tsunami risk for U.S. territories. Fieldwork was conducted in March 2006 on the islands of Bonaire, Puerto Rico, and Guadeloupe to evaluate the stratigraphic records of extreme wave deposits as p
Authors
Robert A. Morton, Bruce M. Richmond, Bruce E. Jaffe, Guy Gelfenbaum
Sri Lanka field survey after the December 2004 Indian Ocean tsunami
An International Tsunami Survey Team (ITST) consisting of scientists from the United States, New Zealand, and Sri Lanka evaluated the impacts of the 26 December 2004 transoceanic tsunami in Sri Lanka two weeks after the event. Tsunami runup height, inundation distance, morphological changes, and sedimentary characteristics of deposits were recorded and analyzed along the southwest and east coasts
Authors
James Goff, Philip L-F. Liu, Bretwood Higman, Robert Morton, Bruce E. Jaffe, Haindra Fernando, Patrick Lynett, Hermann Fritz, Costas Synolakis, Starin Fernando
South San Francisco Bay 2004 topographic lidar survey: Data overview and preliminary quality assessment
Tidal wetlands in South San Francisco Bay (South Bay) have decreased by over 80% in the past 150 years. The California Coastal Conservancy, in conjunction with other state and federal agencies, is collaboratively managing an effort to restore approximately 61 km2 (15,100 acres) of commercial salt evaporation ponds in South Bay to mixed intertidal habitat. In order to best develop restoration strat
Authors
Amy C. Foxgrover, Bruce E. Jaffe
Science and Products
Filter Total Items: 15
No Result Found
Filter Total Items: 89
Estuarine sedimentation, sediment character, and foraminiferal distribution in central San Francisco Bay, California
Central San Francisco Bay is the deepest subembayment in the San Francisco Bay estuary and hence has the largest water volume of any of the subembayments. It also has the strongest tidal currents and the coarsest sediment within the estuary. Tidal currents are strongest over the west-central part of central bay and, correspondingly, this area is dominated by sand-size sediment. Much of the area ea
Authors
John L. Chin, Donald L. Woodrow, Mary McGann, Florence L. Wong, Theresa A. Fregoso, Bruce E. Jaffe
Field survey of the Samoa tsunami of 29 September 2009
On 29 September 2009, a strong earthquake took place south of the Samoa Islands in the southcentral Pacific. It triggered a local tsunami, which caused considerable damage and 189 fatalities on the Samoa Islands and in the northern Tonga archipelago. We present here the results of a tsunami survey conducted by an International Tsunami Survey Team in the Samoa Islands on 4-10 October 2009 and in no
Authors
Emile A. Okal, Hermann M. Fritz, Costas E. Synolakis, José C. Borrero, Robert Weiss, Patrick J. Lynett, Vasily V. Titov, Spyros Foteinis, Bruce E. Jaffe, Philip L-F. Liu, I-Chi Chan
The Limit of Inundation of the September 29, 2009, Tsunami on Tutuila, American Samoa
U.S. Geological Survey scientists investigated the coastal impacts of the September 29, 2009, South Pacific tsunami in Tutuila, American Samoa in October and November 2009, including mapping the alongshore variation in the limit of inundation. Knowing the inundation limit is useful for planning safer coastal development and evacuation routes for future tsunamis and for improving models of tsunami
Authors
Bruce E. Jaffe, Guy Gelfenbaum, Mark L. Buckley, Steve Watt, Alex Apotsos, Andrew W. Stevens, Bruce M. Richmond
Mercury-contaminated hydraulic mining debris in San Francisco Bay
The hydraulic gold-mining process used during the California Gold Rush and in many developing countries today contributes enormous amounts of sediment to rivers and streams. Commonly, accompanying this sediment are contaminants such as elemental mercury and cyanide used in the gold extraction process. We show that some of the mercurycontaminated sediment created by hydraulic gold mining in the Sie
Authors
Robin M. Bouse, Christopher C. Fuller, Samuel N. Luoma, Michelle I. Hornberger, Bruce E. Jaffe, Richard E. Smith
Hindcasting of decadal‐timescale estuarine bathymetric change with a tidal‐timescale model
Hindcasting decadal-timescale bathymetric change in estuaries is prone to error due to limited data for initial conditions, boundary forcing, and calibration; computational limitations further hinder efforts. We developed and calibrated a tidal-timescale model to bathymetric change in Suisun Bay, California, over the 1867–1887 period. A general, multiple-timescale calibration ensured robustness ov
Authors
Neil K. Ganju, David H. Schoellhamer, Bruce E. Jaffe
Sediment deposition, erosion, and bathymetric change in central San Francisco Bay: 1855-1979
Central San Francisco Bay is the hub of a dynamic estuarine system connecting the San Joaquin and Sacramento River Deltas, Suisun Bay, and San Pablo Bay to the Pacific Ocean and South San Francisco Bay. To understand the role that Central San Francisco Bay plays in sediment transport throughout the system, it is necessary to first determine historical changes in patterns of sediment deposition and
Authors
Theresa A. Fregoso, Amy C. Foxgrover, Bruce E. Jaffe
2005 hydrographic survey of south San Francisco Bay, California
An acoustic hydrographic survey of South San Francisco Bay (South Bay) was conducted in 2005. Over 20 million soundings were collected within an area of approximately 250 sq km (97 sq mi) of the bay extending south of Coyote Point on the west shore, to the San Leandro marina on the east, including Coyote Creek and Ravenswood, Alviso, Artesian, and Mud Sloughs. This is the first survey of this scal
Authors
Amy C. Foxgrover, Bruce E. Jaffe, Gerald T. Hovis, Craig A. Martin, James R. Hubbard, Manoj R. Samant, Steve M. Sullivan
Reconstructing sediment age profiles from historical bathymetry changes in San Pablo Bay, California
Sediment age profiles reconstructed from a sequence of historical bathymetry changes are used to investigate the subsurface distribution of historical sediments in a subembayment of the San Francisco Estuary. Profiles are created in a grid-based GIS modeling program that stratifies historical deposition into temporal horizons. The model's reconstructions are supported by comparisons to profiles of
Authors
Shawn A. Higgins, Bruce E. Jaffe, Christopher C. Fuller
Physical criteria for distinguishing sandy tsunami and storm deposits using modern examples
Modern subaerial sand beds deposited by major tsunamis and hurricanes were compared at trench, transect, and sub-regional spatial scales to evaluate which attributes are most useful for distinguishing the two types of deposits. Physical criteria that may be diagnostic include: sediment composition, textures and grading, types and organization of stratification, thickness, geometry, and landscape c
Authors
Robert A. Morton, Guy Gelfenbaum, Bruce E. Jaffe
Reconnaissance investigation of Caribbean extreme wave deposits — Preliminary observations, interpretations, and research directions
This report presents an overview of preliminary geological investigations and recommended future research activities in the Caribbean region pertaining to coastal hazards with an emphasis on establishing tsunami risk for U.S. territories. Fieldwork was conducted in March 2006 on the islands of Bonaire, Puerto Rico, and Guadeloupe to evaluate the stratigraphic records of extreme wave deposits as p
Authors
Robert A. Morton, Bruce M. Richmond, Bruce E. Jaffe, Guy Gelfenbaum
Sri Lanka field survey after the December 2004 Indian Ocean tsunami
An International Tsunami Survey Team (ITST) consisting of scientists from the United States, New Zealand, and Sri Lanka evaluated the impacts of the 26 December 2004 transoceanic tsunami in Sri Lanka two weeks after the event. Tsunami runup height, inundation distance, morphological changes, and sedimentary characteristics of deposits were recorded and analyzed along the southwest and east coasts
Authors
James Goff, Philip L-F. Liu, Bretwood Higman, Robert Morton, Bruce E. Jaffe, Haindra Fernando, Patrick Lynett, Hermann Fritz, Costas Synolakis, Starin Fernando
South San Francisco Bay 2004 topographic lidar survey: Data overview and preliminary quality assessment
Tidal wetlands in South San Francisco Bay (South Bay) have decreased by over 80% in the past 150 years. The California Coastal Conservancy, in conjunction with other state and federal agencies, is collaboratively managing an effort to restore approximately 61 km2 (15,100 acres) of commercial salt evaporation ponds in South Bay to mixed intertidal habitat. In order to best develop restoration strat
Authors
Amy C. Foxgrover, Bruce E. Jaffe