Results 71 to 80 of about 33,051 (324)

Untangling sedimentation processes in a deep fjord lake in Labrador: A high‐resolution archive of past environment dynamics at Grand Lake

open access: yesThe Depositional Record, EarlyView.
Sedimentological and geochemical characteristics are used to reconstruct sedimentation dynamics and erosional processes. Several rapidly deposited layers are characterised over changing depositional environments during the Late Holocene, from a phase when the lake was connected to the sea to a more stable state conducive to varve formation.
Milena S. Kury   +6 more
wiley   +1 more source

Tidal influence on Rutford Ice Stream, West Antarctica: observations of surface flow and basal processes from closely-spaced GPS and passive seismic stations [PDF]

open access: yes, 2008
High-resolution surface velocity measurements and passive seismic observations from Rutford Ice Stream, West Antarctica, 40 km upstream from the grounding line are presented.
A.E. Behar   +11 more
core   +2 more sources

Stratigraphy of diagenesis: Limestone–dolomite cycles in a mid‐ramp setting, Miocene Arcadia Formation, South Florida, USA

open access: yesThe Depositional Record, EarlyView.
The data and interpretations of this study are used to test the proposal by Goldhammer et al. that a ‘stratigraphy of early diagenesis’ is operational in carbonate depositional systems. What this means is that distinct mineralogical and geochemical changes to rock and sediment occur associated with external controls, such as the rise and fall of sea ...
Donald F. McNeill, Peter K. Swart
wiley   +1 more source

A continuous 500‐year sediment record of inundation by local and distant tsunamis in South‐Central Chile (40.1°S)

open access: yesThe Depositional Record, EarlyView.
Tsunami events over the past 500 years inundated Laguna Gemela West (Chile), leading to distinct sandy deposits in the lake record. This provides a complete perspective on tsunami inundation, including giant tsunamis, small local tsunamis and tsunamis that originated >100 km away from the site.
Jasper Moernaut   +8 more
wiley   +1 more source

Seismicity at the Castor gas reservoir driven by pore pressure diffusion and asperities loading

open access: yesNature Communications, 2021
The 2013 Castor seismic sequence, offshore Spain, is a rare example of seismicity induced by gas storage operations. Here we show that early seismicity marked the progressive failure of a fault in response to pore pressure diffusion, while later larger ...
Simone Cesca   +8 more
doaj   +1 more source

Monitoring induced distributed double-couple sources using Marchenko-based virtual receivers

open access: yes, 2019
We aim to monitor and characterize signals in the subsurface by combining these passive signals with recorded reflection data at the surface of the Earth.
Brackenhoff, Joeri   +2 more
core   +1 more source

Predictability of Volcano Eruption: lessons from a basaltic effusive volcano [PDF]

open access: yes, 2003
Volcano eruption forecast remains a challenging and controversial problem despite the fact that data from volcano monitoring significantly increased in quantity and quality during the last decades.This study uses pattern recognition techniques to ...
Aki   +27 more
core   +2 more sources

Earthquake Iso‐Nuisance and Iso‐Damage Mapping for Alberta: Applications for Choosing Magnitude Thresholds to Manage Induced Seismicity

open access: yesEarth's Future
We generate earthquake iso‐nuisance and iso‐damage maps for Alberta. These maps show the spatial distribution of earthquake magnitude required to reach a specific level of nuisance and damage, considering human exposure and surficial geological ...
Mauricio Reyes Canales   +4 more
doaj   +1 more source

Induced seismicity hazard and risk by enhanced geothermal systems: an expert elicitation approach

open access: yesEnvironmental Research Letters, 2018
Induced seismicity is a concern for multiple geoenergy applications, including low-carbon enhanced geothermal systems (EGS). We present the results of an international expert elicitation ( n  = 14) on EGS induced seismicity hazard and risk.
Evelina Trutnevyte, Inês L Azevedo
doaj   +1 more source

Stress buildup in the Himalaya [PDF]

open access: yes, 2004
The seismic cycle on a major fault involves long periods of elastic strain and stress accumulation, driven by aseismic ductile deformation at depth, ultimately released by sudden fault slip events. Coseismic slip distributions are generally heterogeneous
Avouac, J. P.   +3 more
core   +1 more source

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