A5000772316- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Microbial Community Ecology and Physiology
- Marine and coastal ecosystems
- Offshore Engineering and Technologies
- Reservoir Engineering and Simulation Methods
- Drilling and Well Engineering
- Underwater Acoustics Research
- Arctic and Antarctic ice dynamics
- earthquake and tectonic studies
- Spacecraft and Cryogenic Technologies
- Geological and Geochemical Analysis
- Hydraulic Fracturing and Reservoir Analysis
- Marine Biology and Ecology Research
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Geological Studies and Exploration
- Isotope Analysis in Ecology
- Underwater Vehicles and Communication Systems
- Oceanographic and Atmospheric Processes
- Genomics and Phylogenetic Studies
- Groundwater and Isotope Geochemistry
Monterey Bay Aquarium Research Institute
2012-2024
Oceanography Society
2017
University of North Carolina at Chapel Hill
1988-1999
National Institute of Water and Atmospheric Research
1996
Research Triangle Park Foundation
1991
ABSTRACT The oxidation of methane in anoxic marine sediments is thought to be mediated by a consortium methane-consuming archaea and sulfate-reducing bacteria. In this study, we compared results rRNA gene (rDNA) surveys lipid analyses bacteria associated with seep from several different sites on the Californian continental margin. Two distinct archaeal lineages (ANME-1 ANME-2), peripherally related order Methanosarcinales , were consistently sediments. same contained abundant 13 C-depleted...
Research Article| July 01, 1996 Marine pore-water sulfate profiles indicate in situ methane flux from underlying gas hydrate Walter S. Borowski; Borowski 1Department of Geology, University North Carolina, Chapel Hill, Carolina 27599-3315 Search for other works by this author on: GSW Google Scholar Charles K. Paull; Paull William Ussler, III 2NIWA, P.O. Box 14-901, Wellington, New Zealand Geology (1996) 24 (7): 655–658. https://doi.org/10.1130/0091-7613(1996)024<0655:MPWSPI>2.3.CO;2 Article...
Methane may have been released to the atmosphere during Quaternary from Arctic shelf gas‐hydrates as a result of thermal decomposition caused by climatic warming and rising sea‐level; this release methane (a greenhouse gas) represent positive feedback on global [Revelle, 1983; Kvenvolden, 1988a; Nisbet, 1990]. We consider response sea‐level changes immense amount gas‐hydrate that exists in continental rise sediments, suggest reverse situation apply—that trapped deep‐sea sediments provide...
Research Article| January 01, 1995 Methane-rich plumes on the Carolina continental rise: Associations with gas hydrates Charles K. Paull; Paull 1Department of Geology, University North Carolina, Chapel Hill, 27599-3315 Search for other works by this author on: GSW Google Scholar William Ussler, III; III Walter S. Borowski; Borowski Fred N. Spiess 2Marine Physical Laboratory, Scripps Institution Oceanography, La Jolla, California 92093 Author and Article Information Publisher: Geological...
Research Article| February 01, 1996 Increased continental-margin slumping frequency during sea-level lowstands above gas hydrate–bearing sediments Charles K. Paull; Paull 1Department of Geology, University North Carolina, Chapel Hill, Carolina 27599-3315 Search for other works by this author on: GSW Google Scholar William J. Buelow; Buelow Ussler, III; III Walter S. Borowski Author and Article Information Publisher: Geological Society America First Online: 02 Jun 2017 Online ISSN: 1943-2682...
Crescent-shaped bedforms with wavelengths from 20 to 80 m, amplitudes 2.5 and concave down-canyon crests occur in the axial channel of Monterey Canyon (offshore California, USA) water depths 11 more than 350 m. The existence these features may be an important new clue as how sediment moves through submarine canyons. Three complementary studies were initiated 2007 understand origin evolution bedforms. (1) Vibracoring. transects closely spaced remotely operated vehicle–collected vibracores...
Environmental DNA (eDNA) can be used to identify macroorganisms and describe biodiversity, thus has promise supplement biological monitoring in marine ecosystems. Despite this promise, scaling sample acquisition the size temporal scales needed for effective would require prohibitively large investments time human resources. To improve upon these problems, here we test efficacy of an autonomous eDNA sampling system compare results obtained traditional methods. The instrument consisted Sample...
Research Article| September 01, 2005 Trail of sand in upper Monterey Canyon: Offshore California Charles K. Paull; Paull 1Monterey Bay Aquarium Institute, Moss Landing, 95039, USA Search for other works by this author on: GSW Google Scholar Patrick Mitts; Mitts William Ussler, III; III Rendy Keaten; Keaten H. Gary Greene GSA Bulletin (2005) 117 (9-10): 1134–1145. https://doi.org/10.1130/B25390.1 Article history received: 22 Apr 2003 rev-recd: 13 2004 accepted: 26 first online: 02 Mar 2017...
We present a continuous, 2-year long record of carbon dioxide (CO2) mixing ratio at three altitudes up to 496 m above the ground on television transmitter tower in southeastern United States. The data show strong diurnal and seasonal variations, large vertical gradients. cycles are modulated by surface uptake release vegetation soils, emissions from fossil fuel combustion, development planetary boundary layer. Gradients 1–2ppm between 51 typically observed during summertime afternoons, due...
The Arctic shelf is currently undergoing dramatic thermal changes caused by the continued warming associated with Holocene sea level rise. During this transgression, comparatively warm waters have flooded over cold permafrost areas of Shelf. A pulse more than 10°C still propagating down into submerged sediment and may be decomposing gas hydrate as well permafrost. search for venting on seafloor focused pingo‐like‐features (PLFs) Beaufort Sea Shelf because they a direct consequence...
ABSTRACT Methane vents are of significant geochemical and ecological importance. Notable progress has been made toward understanding anaerobic methane oxidation in marine sediments; however, the diversity distribution aerobic methanotrophs water column poorly characterized. Both environments play an essential role regulating release from oceans to atmosphere. In this study, particulate monooxygenase ( pmoA ) 16S rRNA genes two vent along California continental margin was The phylotypes...
Upon their initial discovery, hydrothermal vents and methane seeps were considered to be related but distinct ecosystems, with different distributions, geomorphology, temperatures, geochemical properties mostly species. However, subsequently discovered seep systems have blurred this distinction. Here, we report on a composite, ecosystem at subducting seamount the convergent Costa Rica margin that represents an intermediate between vent ecosystems. Diffuse flow of shimmering, warm fluids high...
The cycling of methane across the soils tidally flooded bank margins in tidal freshwater portion White Oak River estuary, North Carolina, was investigated from October 1990 to November 1991. A comparison between these edges and adjacent submerged stations made. showed large seasonal variations production rates, with very little being produced winter amounts (up 1,000 mg m −2 d −1 ) during summer. This seasonality seems be linked cycle growth senescence vascular plants growing soils. In...