Peter Dartnell
Physical Scientist at the USGS Pacific Coastal and Marine Science Center
Science and Products
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Floor of Lake Tahoe, California and Nevada
Lake-floor depths shown by color, from light tan (shallowest) to blue (deepest). Arrows on map (C) show orientations of perspective views. A, view toward McKinney Bay over blocks tumbled onto the lake floor by a massive landslide 10s to 100s of thousands of years ago; dark triangular block near center is approximately 1.5 km (0.9 mi) across and 120 m (390 ft) high. B, view toward South Lake Tahoe
Authors
Peter Dartnell, Helen Gibbons
Introduction to surficial seafloor mapping and characterization
No abstract available.
Authors
Peter Dartnell
Sea Floor off San Diego, California
Ocean-floor image generated from multibeam-bathymetry data acquired by the U.S. Geological Survey (USGS); Woods Hole Oceanographic Institution; Scripps Institution of Oceanography; California State University, Monterey Bay; and Fugro Pelagos. To learn more, visit http://pubs.usgs.gov/sim/2007/2959/.
Authors
Peter Dartnell, Helen Gibbons
Multibeam Sonar Mapping and Modeling of a Submerged Bryophyte Mat in Crater Lake, Oregon
Traditionally, multibeam data have been used to map sea floor or lake floor morphology as well as the distribution of surficial facies in order to characterize the geologic component of benthic habitats. In addition to using multibeam data for geologic studies, we want to determine if these data can also be used directly to map the distribution of biota. Multibeam bathymetry and acoustic backscatt
Authors
Peter Dartnell, Robert Collier, Mark Buktenica, Steven Jessup, Scott Girdner, Peter Triezenberg
South San Francisco Bay, California
The U.S. Geological Survey, in cooperation with the California Coastal Conservancy and the National Oceanic and Atmospheric Administration, mapped the floor of south San Francisco Bay and adjoining land using single-beam sonar and airborne lidar (light detection and ranging). To learn more, visit http://pubs.usgs.gov/sim/2007/2987/.
View eastward. Elevations in mapped area color coded: purple (a
Authors
Peter Dartnell, Helen Gibbons
Exploring rippled scour depressions offshore Huntington Beach, CA
Morphological model computations based on uniform (non-graded) sediment revealed an unrealistically strong scour of the sea floor in the immediate vicinity to the west of Maasvlakte 2. By means of a state-of-the-art graded sediment transport model the effect of natural armouring and sorting of bed material on the scour process has been examined. Sensitivity computations confirm that the developmen
Authors
Eleyne L. Phillips, Curt D. Storlazzi, Peter Dartnell, Brian D. Edwards
Multibeam bathymetry and backscatter data: Northeastern Channel Islands region, southern California
No abstract available.
Authors
Peter Dartnell, Guy Cochrane, Mary Elaine Dunaway
Los Angeles and San Diego Margin High-Resolution Multibeam Bathymetry and Backscatter Data
Summary -- The U.S. Geological Survey in cooperation with the University of New Hampshire and the University of New Brunswick mapped the nearshore regions off Los Angeles and San Diego, California using multibeam echosounders. Multibeam bathymetry and co-registered, corrected acoustic backscatter were collected in water depths ranging from about 3 to 900 m offshore Los Angeles and in water depths
Authors
Peter Dartnell, James V. Gardner, Larry A. Mayer, John E. Hughes Clarke
Predicted seafloor facies of Central Santa Monica Bay, California
Summary -- Mapping surficial seafloor facies (sand, silt, muddy sand, rock, etc.) should be the first step in marine geological studies and is crucial when modeling sediment processes, pollution transport, deciphering tectonics, and defining benthic habitats. This report outlines an empirical technique that predicts the distribution of seafloor facies for a large area offshore Los Angeles, CA usin
Authors
Peter Dartnell, James V. Gardner
Preliminary hydrodynamic analysis of landslide-generated waves in Tidal Inlet, Glacier Bay National Park, Alaska
A landslide block perched on the northern wall of Tidal Inlet, Glacier Bay National Park (Figure 1), has the potential to generate large waves in Tidal Inlet and the western arm of Glacier Bay if it were to fail catastrophically. Landslide-generated waves are a particular concern for cruise ships transiting through Glacier Bay on a daily basis during the summer months. The objective of this study
Authors
Eric L. Geist, Matthias Jakob, Gerald F. Wieczoreck, Peter Dartnell
Geomorphology, acoustic backscatter, and processes in Santa Monica Bay from multibeam mapping
Santa Monica Bay was mapped in 1996 using a high-resolution multibeam system, providing the first substantial update of the submarine geomorphology since the initial compilation by Shepard and Emery [(1941) Geol. Soc. Amer. Spec. Paper 31]. The multibeam mapping generated not only high-resolution bathymetry, but also coregistered, calibrated acoustic backscatter at 95 kHz. The geomorphology has be
Authors
James V. Gardner, Peter Dartnell, Larry A. Mayer, John E. Hughes Clarke
Characterizing benthic substrates of Santa Monica Bay with seafloor photography and multibeam sonar imagery
Seafloor photography from three cruises is combined with multibeam sonar imagery to characterize benthic substrates and associated fauna of Santa Monica Bay, California. The multibeam EM1000 imagery was collected in 1996. Two sampling cruises (in 1998 and 1999) provided photographs at 142 sites throughout the Bay; a final cruise (in 2000) collected still photographs and continuous video along nine
Authors
Brian Andrews, Peter Dartnell, Henry Chezar
Science and Products
Filter Total Items: 37
No Result Found
Filter Total Items: 18
Filter Total Items: 79
Floor of Lake Tahoe, California and Nevada
Lake-floor depths shown by color, from light tan (shallowest) to blue (deepest). Arrows on map (C) show orientations of perspective views. A, view toward McKinney Bay over blocks tumbled onto the lake floor by a massive landslide 10s to 100s of thousands of years ago; dark triangular block near center is approximately 1.5 km (0.9 mi) across and 120 m (390 ft) high. B, view toward South Lake Tahoe
Authors
Peter Dartnell, Helen Gibbons
Introduction to surficial seafloor mapping and characterization
No abstract available.
Authors
Peter Dartnell
Sea Floor off San Diego, California
Ocean-floor image generated from multibeam-bathymetry data acquired by the U.S. Geological Survey (USGS); Woods Hole Oceanographic Institution; Scripps Institution of Oceanography; California State University, Monterey Bay; and Fugro Pelagos. To learn more, visit http://pubs.usgs.gov/sim/2007/2959/.
Authors
Peter Dartnell, Helen Gibbons
Multibeam Sonar Mapping and Modeling of a Submerged Bryophyte Mat in Crater Lake, Oregon
Traditionally, multibeam data have been used to map sea floor or lake floor morphology as well as the distribution of surficial facies in order to characterize the geologic component of benthic habitats. In addition to using multibeam data for geologic studies, we want to determine if these data can also be used directly to map the distribution of biota. Multibeam bathymetry and acoustic backscatt
Authors
Peter Dartnell, Robert Collier, Mark Buktenica, Steven Jessup, Scott Girdner, Peter Triezenberg
South San Francisco Bay, California
The U.S. Geological Survey, in cooperation with the California Coastal Conservancy and the National Oceanic and Atmospheric Administration, mapped the floor of south San Francisco Bay and adjoining land using single-beam sonar and airborne lidar (light detection and ranging). To learn more, visit http://pubs.usgs.gov/sim/2007/2987/.
View eastward. Elevations in mapped area color coded: purple (a
Authors
Peter Dartnell, Helen Gibbons
Exploring rippled scour depressions offshore Huntington Beach, CA
Morphological model computations based on uniform (non-graded) sediment revealed an unrealistically strong scour of the sea floor in the immediate vicinity to the west of Maasvlakte 2. By means of a state-of-the-art graded sediment transport model the effect of natural armouring and sorting of bed material on the scour process has been examined. Sensitivity computations confirm that the developmen
Authors
Eleyne L. Phillips, Curt D. Storlazzi, Peter Dartnell, Brian D. Edwards
Multibeam bathymetry and backscatter data: Northeastern Channel Islands region, southern California
No abstract available.
Authors
Peter Dartnell, Guy Cochrane, Mary Elaine Dunaway
Los Angeles and San Diego Margin High-Resolution Multibeam Bathymetry and Backscatter Data
Summary -- The U.S. Geological Survey in cooperation with the University of New Hampshire and the University of New Brunswick mapped the nearshore regions off Los Angeles and San Diego, California using multibeam echosounders. Multibeam bathymetry and co-registered, corrected acoustic backscatter were collected in water depths ranging from about 3 to 900 m offshore Los Angeles and in water depths
Authors
Peter Dartnell, James V. Gardner, Larry A. Mayer, John E. Hughes Clarke
Predicted seafloor facies of Central Santa Monica Bay, California
Summary -- Mapping surficial seafloor facies (sand, silt, muddy sand, rock, etc.) should be the first step in marine geological studies and is crucial when modeling sediment processes, pollution transport, deciphering tectonics, and defining benthic habitats. This report outlines an empirical technique that predicts the distribution of seafloor facies for a large area offshore Los Angeles, CA usin
Authors
Peter Dartnell, James V. Gardner
Preliminary hydrodynamic analysis of landslide-generated waves in Tidal Inlet, Glacier Bay National Park, Alaska
A landslide block perched on the northern wall of Tidal Inlet, Glacier Bay National Park (Figure 1), has the potential to generate large waves in Tidal Inlet and the western arm of Glacier Bay if it were to fail catastrophically. Landslide-generated waves are a particular concern for cruise ships transiting through Glacier Bay on a daily basis during the summer months. The objective of this study
Authors
Eric L. Geist, Matthias Jakob, Gerald F. Wieczoreck, Peter Dartnell
Geomorphology, acoustic backscatter, and processes in Santa Monica Bay from multibeam mapping
Santa Monica Bay was mapped in 1996 using a high-resolution multibeam system, providing the first substantial update of the submarine geomorphology since the initial compilation by Shepard and Emery [(1941) Geol. Soc. Amer. Spec. Paper 31]. The multibeam mapping generated not only high-resolution bathymetry, but also coregistered, calibrated acoustic backscatter at 95 kHz. The geomorphology has be
Authors
James V. Gardner, Peter Dartnell, Larry A. Mayer, John E. Hughes Clarke
Characterizing benthic substrates of Santa Monica Bay with seafloor photography and multibeam sonar imagery
Seafloor photography from three cruises is combined with multibeam sonar imagery to characterize benthic substrates and associated fauna of Santa Monica Bay, California. The multibeam EM1000 imagery was collected in 1996. Two sampling cruises (in 1998 and 1999) provided photographs at 142 sites throughout the Bay; a final cruise (in 2000) collected still photographs and continuous video along nine
Authors
Brian Andrews, Peter Dartnell, Henry Chezar