Mission Areas

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Filter Total Items: 4,465
Year Published: 2007

Microarchitectural change in density bands of the scleractinian montastraea faveolata, Looe Key Reef, Florida Keys, USA

No abstract available.

Buster, N.A.; Sorauf, J.E.
Microarchitectural change in density bands of the scleractinian montastraea faveolata, Looe Key Reef, Florida Keys, USA; 2007; Article; Conference publication; Fossil corals and sponges: proceedings of the 9th International Symposium on Fossil Cnidaria and Porifera, Graz 2003; Buster, N. A.; Sorauf, J. E.

Year Published: 2007

Southern California Bight 2003 Regional Monitoring Program: V. water quality

More than $30 million is expended annually on environmental monitoring in the Southern California Bight (SCB), yet only 5% of the Bight is monitored on an ongoing basis. Therefore, environmental managers in the SCB decided to expand their monitoring program and, starting in 1994, decided to conduct periodic regional assessments of ecosystem...

Nezlin, Nikolay P.; DiGiacomo, Paul M.; Weisberg, Stephen B.; Diehl, Dario W.; Warrick, Jonathan A.; Mengel, Michael J.; Jones, Burton H.; Reifel, Kristen M.; Johnson, Scott C.; Ohlmann, J. Carter; Washburn, Libe; Terrill, Eric J.
Southern California Bight 2003 Regional Monitoring Program: V. water quality; 2007; Organization Series; 528; Nezlin, Nikolay P.; DiGiacomo, Paul M.; Weisberg, Stephen B.; Diehl, Dario W.; Warrick, Jonathan A.; Mengel, Michael J.; Jones, Burton H.; Reifel, Kristen M.; Johnson, Scott C.; Ohlmann, J. Carter; Washburn, Libe; Terrill, Eric J.

Year Published: 2007

Integrating hydrologic and geophysical data to constrain coastal surficial aquifer processes at multiple spatial and temporal scales

Since 1997, repeated, coincident geophysical surveys and extensive hydrologic studies in shallow monitoring wells have been used to study static and dynamic processes associated with surface water-groundwater interaction at a range of spatial scales at the estuarine and ocean boundaries of an undeveloped, permeable barrier island in the Georgia...

Hyndman, David W.; Day-Lewis, Frederick D.; Singha, Kamini; Schultz, Gregory M.; Ruppel, Carolyn; Fulton, Patrick
Integrating hydrologic and geophysical data to constrain coastal surficial aquifer processes at multiple spatial and temporal scales; 2007; Book chapter; Book; Subsurface hydrology: data integration for properties and processes; Schultz, Gregory M.; Ruppel, Carolyn; Fulton, Patrick

Year Published: 2007

1400 yr multiproxy record of climate variability from the northern Gulf of Mexico

A continuous decadal-scale resolution record of climate variability over the past 1400 yr in the northern Gulf of Mexico was constructed from a box core recovered in the Pigmy Basin, northern Gulf of Mexico. Proxies include paired analyses of Mg/Ca and δ18O in the white variety of the planktic foraminifer Globigerinoides ruber and relative...

Richey, J.N.; Poore, R.Z.; Flower, B.P.; Quinn, T.M.
1400 yr multiproxy record of climate variability from the northern Gulf of Mexico; 2007; Article; Journal; Geology; Richey, J. N.; Poore, R. Z.; Flower, B. P.; Quinn, T. M.

Year Published: 2007

A catastrophic meltwater flood event and the formation of the Hudson Shelf Valley

The Hudson Shelf Valley (HSV) is the largest physiographic feature on the U.S. mid-Atlantic continental shelf. The 150-km long valley is the submerged extension of the ancestral Hudson River Valley that connects to the Hudson Canyon. Unlike other incised valleys on the mid-Atlantic shelf, it has not been infilled with sediment during the Holocene...

Thieler, E. Robert; Butman, Bradford; Schwab, William C.; Allison, Mead A.; Driscoll, Neal W.; Donnelly, John P.; Uchupi, Elazar
A catastrophic meltwater flood event and the formation of the Hudson Shelf Valley; 2007; Article; Journal; Palaeogeography, Palaeoclimatology, Palaeoecology; Thieler, E. Robert; Butman, Bradford; Schwab, William C.; Allison, Mead A.; Driscoll, Neal W.; Donnelly, Jeffrey P.; Uchupi, Elazar

Year Published: 2007

A circulation modeling approach for evaluating the conditions for shoreline instabilities

Analytical models predict the growth (instability) of shoreline salients when deep-water waves approach the coast from highly oblique angles, contrary to classical shoreline change models in which shoreline salients can only dissipate. Using the process-based wave, circulation, and sediment transport model Delft3D, we test this prediction for...

List, Jeffrey H.; Ashton, Andrew D.
A circulation modeling approach for evaluating the conditions for shoreline instabilities; 2007; Article; Conference publication; Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes; List, Jeffrey H.; Ashton, Andrew D.

Year Published: 2007

A closer look at water-related geologic activity on Mars

Water has supposedly marked the surface of Mars and produced characteristic landforms. To understand the history of water on Mars, we take a close look at key locations with the High-Resolution Imaging Science Experiment on board the Mars Reconnaissance Orbiter, reaching fine spatial scales of 25 to 32 centimeters per pixel. Boulders ranging up to...

McEwen, Alfred S.; Hansen, C.J.; Delamere, W.A.; Eliason, E.M.; Herkenhoff, Kenneth E.; Keszthelyi, Laszlo P.; Gulick, V.C.; Kirk, Randolph L.; Mellon, M.T.; Grant, J. A.; Thomas, N.; Weitz, C.M.; Squyres, S. W.; Bridges, N.T.; Murchie, S.L.; Seelos, F.; Seelos, K.; Okubo, C.H.; Milazzo, M.P.; Tornabene, L.L.; Jaeger, W.L.; Byrne, S.; Russell, P.S.; Griffes, J.L.; Martinez-Alonso, S.; Davatzes, A.; Chuang, F.C.; Thomson, B.J.; Fishbaugh, K.E.; Dundas, C.M.; Kolb, K.J.; Banks, M.E.; Wray, J.J.

Year Published: 2007

A deep reef in deep trouble

The well-documented degradation of shallower reefs which are often closer to land and more vulnerable to pollution, sewage and other human-related stressors has led to the suggestion that deeper, more remote offshore reefs could possibly serve as sources of coral and fish larvae to replenish the shallower reefs. Yet, the distribution, status, and...

Menza, Charles; Kendall, M.; Rogers, C.; Miller, J.
A deep reef in deep trouble; 2007; Article; Journal; Continental Shelf Research; Menza, C.; Kendall, M.; Rogers, C.; Miller, J.

Year Published: 2007

A simple model for the spatially-variable coastal response to hurricanes

The vulnerability of a beach to extreme coastal change during a hurricane can be estimated by comparing the relative elevations of storm-induced water levels to those of the dune or berm. A simple model that defines the coastal response based on these elevations was used to hindcast the potential impact regime along a 50-km stretch of the North...

Stockdon, H.F.; Sallenger, A.H.; Holman, R.A.; Howd, P.A.
A simple model for the spatially-variable coastal response to hurricanes; 2007; Article; Journal; Marine Geology; Stockdon, Hilary F.; Sallenger, Asbury H., Jr.; Holman, Rob A.; Howd, Peter A.

Year Published: 2007

Airborne desert dust and aeromicrobiology over the Turkish Mediterranean coastline

Between 18 March and 27 October 2002, 220 air samples were collected on 209 of 224 calendar days, on top of a coastal atmospheric research tower in Erdemli, Turkey. The volume of air filtered for each sample was 340 liters. Two hundred fifty-seven bacterial and 2598 fungal colony forming units (CFU) were enumerated from the samples using a low-...

Griffin, Dale W.; Kubilay, Nilgün; Kocak, Mustafa; Gray, Mike A.; Borden, Timothy C.; Shinn, Eugene A.
Airborne desert dust and aeromicrobiology over the Turkish Mediterranean coastline; 2007; Article; Journal; Atmospheric Environment; Griffin, Dale W.; Kubilay, Nilgün; Kocak, Mustafa; Gray, Mike A.; Borden, Timothy C.; Shinn, Eugene A.

Year Published: 2007

Altered mangrove wetlands as habitat for estuarine nekton: are dredged channels and tidal creeks equivalent?

Hasty decisions are often made regarding the restoration of "altered" habitats, when in fact the ecological value of these habitats may be comparable to natural ones. To assess the "value" of altered mangrove-lined habitats for nekton, we sampled for 1 yr within three Tampa Bay wetlands. Species composition, abundance, and spatial distribution of...

Krebs, Justin M.; Brame, Adam B.; McIvor, Carole C.
Altered mangrove wetlands as habitat for estuarine nekton: are dredged channels and tidal creeks equivalent?; 2007; Article; Journal; Bulletin of Marine Science; Krebs, Justin M.; Brame, Adam B.; McIvor, Carole C.

Year Published: 2007

Amplitude loss of sonic waveform due to source coupling to the medium

In contrast to hydrate-free sediments, sonic waveforms acquired in gas hydrate-bearing sediments indicate strong amplitude attenuation associated with a sonic velocity increase. The amplitude attenuation increase has been used to quantify pore-space hydrate content by attributing observed attenuation to the hydrate-bearing sediment's intrinsic...

Lee, Myung W.; Waite, William F.
Amplitude loss of sonic waveform due to source coupling to the medium; 2007; Article; Journal; Geophysical Research Letters; Lee, Myung W.; Waite, William F.

Filter Total Items: 2,695
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards