A5002890405- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- Geological and Geophysical Studies
- Geological and Tectonic Studies in Latin America
- Methane Hydrates and Related Phenomena
- Geological Studies and Exploration
- Geology and Paleoclimatology Research
- Seismology and Earthquake Studies
- Geological formations and processes
- Geological Modeling and Analysis
- Hydrocarbon exploration and reservoir analysis
- Underwater Acoustics Research
- Geophysical Methods and Applications
- Reservoir Engineering and Simulation Methods
- Geological and Geophysical Studies Worldwide
- Botany and Geology in Latin America and Caribbean
- Atmospheric and Environmental Gas Dynamics
- Marine animal studies overview
- Marine and environmental studies
- Hydraulic Fracturing and Reservoir Analysis
- Oceanographic and Atmospheric Processes
- Geophysics and Sensor Technology
Dalhousie University
2016-2025
Lamont-Doherty Earth Observatory
2011-2023
Columbia University
2010-2023
John Wiley & Sons (United States)
2014-2015
Hanover College
2015
University of Texas Institute for Geophysics
2014
The University of Texas at Austin
2014
Geological Survey of Canada
2003
Natural Resources Canada
2003
University of Toronto
1999-2002
Research Article| March 01, 2006 Rift topography linked to magmatism at the intermediate spreading Juan de Fuca Ridge Suzanne M. Carbotte; Carbotte 1Lamont-Doherty Earth Observatory, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Robert S. Detrick; Detrick 2Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, Alistair Harding; Harding 3Scripps Institution of Oceanography, La Jolla, California 92093, Pablo Canales; Canales 4Woods...
Multichannel seismic reflection data collected in July 2002 at the Endeavour Segment, Juan de Fuca Ridge, show a midcrustal reflector underlying all of known high‐temperature hydrothermal vent fields this area. On basis character and geometry reflection, its similarity to events other spreading centers, polarity, we identify as from one or more crustal magma bodies rather than cracking front interface. The chamber is found under central, topographically shallow section segment two‐way...
Abstract We present prestack time‐migrated multichannel seismic images along two cross‐plate transects from the Juan de Fuca (JdF) Ridge to Cascadia deformation front (DF) offshore Oregon and Washington which we characterize crustal structure, distribution extent of faults across plate interior as crust ages near DF in response subduction bending. Within interior, observe numerous small offset sediment section beginning 50–70 km ridge axis with sparse fault plane reflections confined upper...
Research Article| August 01, 2014 Anatomy of an active submarine volcano A.F. Arnulf; Arnulf 1Cecil H. and Ida M. Green Institute Geophysics Planetary Physics, Scripps Institution Oceanography, University California–San Diego, La Jolla, California 92093, USA Search for other works by this author on: GSW Google Scholar A.J. Harding; Harding G.M. Kent; Kent 2Nevada Seismological Laboratory, 0174, Nevada–Reno, Reno, Nevada 89557, S.M. Carbotte; Carbotte 3Lamont-Doherty Earth Observatory,...
Abstract Seismic reflection data collected offshore of Alaska Peninsula across the western edge Semidi segment show distinctive variations in characteristics megathrust fault with depth, suggesting changes structure that may relate to seismic behavior. From trench ~40 km landward, two parallel reflections are observed, which we interpret as top and bottom subducted sediment section. ~50 95 from trench, plate interface appears a thin (<400 ms) band. Deeper farther transitions thicker...
Research Article| February 09, 2018 Connections between subducted sediment, pore-fluid pressure, and earthquake behavior along the Alaska megathrust Jiyao Li; Li 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Donna J. Shillington; Shillington * *E-mail: djs@ldeo.columbia.edu Demian M. Saffer; Saffer 2Department Geosciences, The Pennsylvania State University Park, 16802, Anne Bécel; Bécel...
Abstract We computed crustal thickness (5740 ± 270 m) and mapped Moho reflection character using 3‐D seismic data covering 658 km 2 of the fast‐spreading East Pacific Rise (EPR) from 9°42′N to 9°57′N. reflections are imaged within ∼87% study area. Average varies little between large sections area suggesting regionally uniform production in last ∼180 Ka. However, individual measurements differ by as much 1.75 indicating that mantle melt delivery has not been uniform. Third‐order, but...
Abstract We report results from a wide‐angle controlled source seismic experiment across the Juan de Fuca plate designed to investigate evolution of accretion at ridge subduction Cascadia margin. A two‐dimensional velocity model crust and upper mantle is derived joint reflection‐refraction traveltime inversion. To interpret our tomography results, we first generate plausible baseline model, assuming cooling realistic oceanic lithologies. then use an effective medium theory infer extent...
The origin of rupture segmentation along subduction zone megathrusts and linkages to the structural evolution are poorly understood. Here, regional-scale seismic imaging Cascadia margin is used characterize megathrust spanning ~900 km from Vancouver Island California border, across seismogenic a few tens kilometers coast. Discrete domains in lower plate geometry sediment underthrusting identified, not evident prior regional models, which align with changes lithology structure upper...
We use multichannel seismic reflection data to image the upper crustal structure of 0–620 ka crust along southern Juan de Fuca Ridge. The study area comprises two segments spreading at intermediate rate with an axial high morphology narrow (Cleft) and wide (Vance) summit grabens (ASG). Along most axis both we top magma chamber (AMC). AMC Cleft deepens from south north, 2.0 km beneath RIDGE Observatory hydrothermal vents near end segment 2.3 northern site 1980s eruptive event. Vance segment,...
Multichannel seismic and bathymetric data from the Juan de Fuca Ridge (JDFR) provide constraints on axial ridge flank structure for past 4–8 Ma within three spreading corridors crossing Cleft, Northern Symmetric, Endeavour segments. Along‐axis reveal south‐to‐north gradients in seafloor relief presence depth of crustal magma lens, which indicate a warmer regime to south, both regional scale individual For young crust, cross‐axis lines differences between segments Moho two‐way traveltimes...