Results 61 to 70 of about 5,389 (263)

Refinement of the Quaternary seismic stratigraphy and analysis of buried glacial channels on the Labrador Shelf

Journal of Quaternary Science, EarlyView.
ABSTRACT The Laurentide Ice Sheet covered vast areas of North America during the Wisconsinan, including the Labrador Shelf, off the coast of eastern Canada. The shelf is characterized by glacial cross‐shelf troughs, which have been considered as predominantly eroded by the last ice advance.
Kai‐Frederik Lenz, Felix Gross, A. Catalina Gebhardt, Arne Lohrberg, Ralph Schneider, Henriette Kolling, Florian Riefstahl, Orlando Martinez Bautista, Viktoria Thamm, Sebastian Krastel   +9 more
wiley   +1 more source

Velocity Model Construction and Time-to-Depth Conversion of a Vintage Seismic Reflection Profile for Improving the Constraints on a Subsurface Geological Model: An Example from the Sicily Channel (Central Mediterranean Sea)

Geosciences
The well-known uncertainties in subsurface velocity field definition call for the integration of all the available data, including vintage seismic profiles, which, despite typically being in raster or paper format, often contain velocities derived from ...
Aasiya Qadir, Nicolò Chizzini, Mariagiada Maiorana, Andrea Artoni, Luigi Torelli, Attilio Sulli   +5 more
doaj   +1 more source

A novel approach for in situ benthic habitat characterization

Limnology and Oceanography: Methods, EarlyView.
Abstract Habitat heterogeneity is a key driver of temporal and spatial variability of subtidal marine benthic biodiversity. However, this makes it a challenging environment in which to measure and quantify the factors driving biodiversity in a consistent manner.
Ryan J. W. Mathews, David K. A. Barnes, Simon A. Morley, Gareth Flint, Lloyd S. Peck   +4 more
wiley   +1 more source

Focused monitoring using Vertical Seismic Profile data [PDF]

E3S Web of Conferences
Recent developments in light and ultra-light monitoring methods have made it possible to focus on specific “spot” locations using light seismic spreads and tailored processing workflows for both onshore and offshore surveys.
Mari Jean Luc, Al Khatib Habib, Morgan Elodie, Peruche Pauline   +3 more
doaj   +1 more source

Monitoring shallow geothermal aquifers with active‐source distributed acoustic sensing: A prognostic feasibility study on the University of Leeds Geothermal Campus

Near Surface Geophysics, EarlyView.
Abstract The United Kingdom's shallow aquifers offer significant but underdeveloped geothermal energy resource. Seismic methods can help address this by improving the understanding of aquifer heterogeneity and potentially allowing long‐term monitoring of thermal plumes.
Adam D. Booth, Roger A. Clark, Andy Nowacki, Ravi Myanger, Joseph Kelly, Sjoerd de Ridder, Arka Dyuti Sarkar, Fleur Loveridge, Richard Collier, Emma Bramham, David Healy   +10 more
wiley   +1 more source

Internal Structure, Kinematics, and Prehistory of Frozen Debris Lobe‐A (FDL‐A), Brooks Range, Alaska

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Frozen Debris Lobe‐A (FDL‐A)—one of hundreds of FDLs in the Brooks Range of northern Alaska—is a slow‐moving landslide in permafrost that has been the subject of research since 2008 due to its close proximity to the Dalton Highway. Here, we synthesize more than a decade's worth of climate and surface measurements of monitored FDLs, and the ...
Margaret M. Darrow, Esther L. Babcock, Ben A. Leshchinsky   +2 more
wiley   +1 more source

A Sensitivity Analysis Workflow for Power Series Compounded Lifetime Models: Evidence From Weibull Power Series Fits

Quality and Reliability Engineering International, EarlyView.
ABSTRACT We propose a practical procedure to quantify the time varying influence of parameters on hazard functions for power series compounded lifetime models. The procedure combines likelihood based fitting with a two stage sensitivity analysis and applies to a range of baselines and compounding laws.
Yuancheng Si, Saralees Nadarajah
wiley   +1 more source

Designing Elastic Softening Under Compression via Dipole–Dipole Interactions: The Case of Na2TiSiO5

Small, EarlyView.
Pressure usually stiffens solids, yet Na2TiSiO5 exhibits anomalous elastic softening under compression. Unlike conventional mechanisms driven by geometric rearrangements or electronic spin‐state transitions, the softening originates from enhanced dipole coupling along head‐to‐tail TiO5 chains.
Peijie Zhang, Alfonso Muñoz, Neha Bura, Pablo Botella, Catalin Popescu, Julio Pellicer‐Porres, Xiao Dong, Daniel Errandonea   +7 more
wiley   +1 more source

Shallow seismic reflection imaging of the Inabanga–Clarin portion of the North Bohol Fault, Central Visayas, Philippines

Geoscience Letters, 2019
On 15 October 2013, a magnitude 7.2 earthquake was generated from a previously unidentified fault in the island of Bohol. This fault was named the North Bohol Fault (NBF) by authorities.
Romer Carlo T. Gacusan, Alfredo Mahar Francisco A. Lagmay   +1 more
doaj   +1 more source

Direct methods for seismic profiling

, 1978
We are engaged in a coordinated research program in inverse problems. Over the present contract period we have made substantial progress in all the areas of proposed research. This progress report described accomplishments in the following areas: (1) treatment of perturbations from non-constant reference speed in one dimensional propagation problems ...
N. Bleistein, J.K. Cohen
openaire   +2 more sources