A5066735041- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- Reservoir Engineering and Simulation Methods
- Hydrocarbon exploration and reservoir analysis
- Geological and Geochemical Analysis
- Geological and Geophysical Studies
- Offshore Engineering and Technologies
- Geology and Paleoclimatology Research
- Spacecraft and Cryogenic Technologies
- Drilling and Well Engineering
- Seismic Waves and Analysis
- Geological formations and processes
- Hydraulic Fracturing and Reservoir Analysis
- Karst Systems and Hydrogeology
- Astro and Planetary Science
- Groundwater and Isotope Geochemistry
- Geological and Tectonic Studies in Latin America
- Geological Modeling and Analysis
- Astronomical Observations and Instrumentation
- Groundwater flow and contamination studies
- High-pressure geophysics and materials
- Seismology and Earthquake Studies
- Planetary Science and Exploration
- Geomagnetism and Paleomagnetism Studies
University of Florida
2012-2023
Expedition (United Kingdom)
2019
International Ocean Discovery Program
2019
Scientific Committee On Oceanic Research
2011
University of Colorado Boulder
1997-2003
University of Hawaiʻi at Mānoa
2000
Bethlehem Area School District
1997
Williams (United States)
1997
Lehigh University
1995
University of California, Santa Cruz
1990
The Nankai Trough accretionary prism is considered an “end‐member” accreting a coarse terrigenous sediment section in setting with structural simplicity, unparalleled resolution by seismic and other geophysical techniques, large historic earthquakes. It therefore has been the focus of Ocean Drilling Program (ODP) drilling to address several unresolved questions concerning processes evolution. At six sites cored along two transects across during ODP Leg 190, lithostratigraphy diagenesis vary...
Integrated Ocean Drilling Program (IODP) Expedition 316 Sites C0006 and C0007 examined the deformation front of Nankai accretionary prism offshore Kii Peninsula, Japan. In drilling area, frontal thrust shows unusual behavior as compared to other regions Trough. results, integrated with observations from seismic reflection profiles, suggest that has been active since ∼0.78–0.436 Ma accommodated ∼13 34% estimated plate convergence during time. The remainder likely distributed among...
Seismic faulting along subduction-type plate boundaries plays a fundamental role in tsunami genesis. During the Integrated Ocean Drilling Program (IODP) Nankai Trough Seismogenic Zone Experiment (NanTro SEIZE) Stage 1, updip ends of boundary subduction faults were drilled and cored (offshore Japan), where repeated large earthquakes tsunamis have occurred, including A.D. 1944 Tonankai (Mw = 8.1) earthquake. Samples obtained from frontal thrust, which connects deep to seafloor at toe...
Slow slip events (SSEs) accommodate a significant proportion of tectonic plate motion at subduction zones, yet little is known about the faults that actually host them. The shallow depth (<2 km) well-documented SSEs Hikurangi zone offshore New Zealand offers unique opportunity to link geophysical imaging with direct access incoming material represents megathrust fault rocks hosting slow slip. Two recent International Ocean Discovery Program Expeditions sampled this before it entrained...
Multiple lines of evidence exist for a range sediment mass movement processes within the shallow megasplay fault zone (MSFZ) area and adjacent slope basin in outer fore arc Nankai subduction zone, Japan. Diagnostic features observed three‐dimensional reflection seismic data cores Integrated Ocean Drilling Program (IODP) document multifarious history spanning ∼2.87 million years. Various modes scales remobilization can be related to different morphotectonic settings which they occurred. From...
Recent measurements from Ocean Drilling Program leg 110 and Deep Sea Project 78a indicate that pore pressures near the toe of Barbados accretionary prism may be close to lithostatic décollement is a zone with relatively high rates fluid flow methane transport. We used numerical model estimate intrinsic permeabilities, pressures, velocities are consistent these observations. Model results suggest permeability 3–5 orders magnitude greater than adjacent sediments. If permeabilities in vary...
Research Article| January 01, 2002 Porosity loss within the underthrust sediments of Nankai accretionary complex: Implications for overpressures Elizabeth Screaton; Screaton 1Department Geological Sciences, University Florida, Gainesville, Florida 32611, USA Search other works by this author on: GSW Google Scholar Demian Saffer; Saffer 2Department Geology and Geophysics, Wyoming, Laramie, Wyoming 82071-3006, Pierre Henry; Henry 3Département de Géologie, École Normale Supérieure, Paris Cedex...
The temporal and spatial evolution of a seismogenic megasplay fault in the Kumano area, Nankai Trough (southwest Japan), is revealed by detailed investigation three‐dimensional structure shallow portions fault, combined with results drilling dating cores from Integrated Ocean Drilling Program (IODP) Expedition 316. ENE striking eastern portion splay has remained active since inception faulting at ∼1.95 Ma. recent shortening rate ∼1 m/kyr, which represents ∼1.5%–2.5% total plate convergence...
Abstract Widespread permafrost thaw in response to changing climate conditions has the potential dramatically impact ecosystems, infrastructure, and global carbon budget. Ambient seismic noise techniques allow passive subsurface monitoring that could provide new insights into vulnerability active‐layer processes. Using nearly 2 years of continuous data recorded near Fairbanks, Alaska, we measured relative velocity variations showed a clear seasonal cycle reflecting freeze thaw. Relative...
Accretionary prisms are wedges of saturated sediment that subject to intense deformation as a result lithosphere convergence. Compressive stress and rapid burial the accreted deposits in compaction mineral dehydration. These latter processes, conjunction with fermentation or thermal maturation entrained organic matter, yield hydrocarbon‐bearing pore fluids expelled from prism. Regional fluxes heat number dissolved chemical species, most notably carbon, controlled by advective expulsion...
Research Article| March 01, 2011 River reversals into karst springs: A model for cave enlargement in eogenetic aquifers Jason Gulley; Gulley Department of Geological Sciences, P.O. Box 112120, University Florida, Gainesville, Florida 32611-2120, USA Search other works by this author on: GSW Google Scholar Jonathan B. Martin; Martin Elizabeth J. Screaton; Screaton Paul Moore † †E-mail: gulley.jason@gmail.com Author and Article Information Publisher: Society America Received: 20 Jan 2010...
Abstract Cross correlations of seismic noise can potentially record large changes in subsurface velocity due to permafrost dynamics and be valuable for long‐term Arctic monitoring. We applied interferometry, using moving window cross‐spectral analysis (MWCS), 2 years ambient data recorded central Alaska investigate whether could used quantify relative seasonal active‐layer dynamics. The (>75%) between frozen thawed soil caused prevalent cycle‐skipping which made the method unusable this...
Research Article| September 01, 1998 Consolidation patterns during initiation and evolution of a plate-boundary decollement zone: Northern Barbados accretionary prism J. Casey Moore; Moore 1Earth Sciences Department, University California, Santa Cruz, California 95064 Search for other works by this author on: GSW Google Scholar Adam Klaus; Klaus 2Ocean Drilling Program, Texas A&M University, College Station, 77845 Nathan L. Bangs; Bangs 3Institute Geophysics, Texas, Austin, 78759 Barbara...
Abstract Exchange of water between conduits and matrix is an important control on regional chemical compositions, karstification, quality ground resources in karst aquifers. A sinking stream (Santa Fe River Sink) its resurgence (River Rise) the unconfined portion Floridan Aquifer provide opportunity to monitor conduit inflow outflow. The use temperature as a tracer allows determination residence times velocities through system. Based records from two high events, flow reasonably represented...
Transport rates and residence time in the subsurface are critical parameters for understanding water‐rock interactions efficient contaminant remediation. This paper presents a methodology assessing flow transit of water through hydrological systems, with specific applications to karst systems implication hydraulics conduit system surrounded by porous permeable intergranular matrix. A variant cross‐correlation function analysis is applied bivariate series that characterize mass transfer,...
The Nankai Trough off southwest Japan has an ∼1300 yr historical record of great earthquakes, including the most recent, A.D. 1944 Tonankai (M = 8.2) earthquake. Evaluation activity individual submarine fault is difficult when only onland observations are available. Submarine core records can pinpoint activity. Here we present Integrated Ocean Drilling Program (IODP) Seismogenic Zone Experiment data from shallow portion. IODP Expedition 316 drilled and cored several holes in portion offshore...