Results 71 to 80 of about 1,554 (166)

Reciprocity-based passive monitoring with individual sources

open access: yes, 2019
Time-lapse changes in the subsurface can be analyzed by comparing seismic reflection data from two different states, one serving as the base survey and the second as the monitor survey.
van der Neut, J.R.   +5 more
core   +1 more source

Coupled modelling of land surface microwave interactions using ENVISAT ASAR data [PDF]

open access: yes, 2004
In the last decades microwave remote sensing has proven its capability to provide valuable information about the land surface. New sensor generations as e.g. ENVISAT ASAR are capable to provide frequent imagery with an high information content.
Löw, Alexander, Loew, A.
core  

Optical instrumentation for fluid flow in gas turbines [PDF]

open access: yes
Both a novel shearing interferometer and the first demonstration of particle image velocimetry (PIV) to the stator-rotor gap of a spinning turbine cascade are presented.
Burnett, Mark
core  

Passive seismic imaging at reservoir depths using ambient seismic noise recorded at the Otway CO2 geological storage research facility

open access: yes, 2017
We demonstrate rapid convergence ( < 60 min) of passive seismic images down to reservoir depths (~2.0 km) at the CO2CRC Otway CO 2 geological storage research facility, Australia, using ambient seismic noise (ASN) recorded continuously with a buried
Lumley, D.   +5 more
core   +1 more source

Noise-based passive ballistic wave seismic monitoring on an active volcano

open access: yes, 2020
International audienceMonitoring temporal changes of volcanic interiors is important to understand magma, fluid pressurization and transport leading to eruptions. Noise-based passive seismic monitoring using coda wave interferometry is a powerful tool to
Takano, Tomoya   +4 more
core   +1 more source

Passive Seismic Monitoring of an Experimental CO2 Geological Storage Site in Hontomin (Northern Spain)

open access: yes, 2014
A passive seismic monitoring network has been deployed as part of the CIUDEN CO2 Geological Storage Program. In this paper we present the kick off of this network, showing the preliminary studies to assure its feasibility.
Gaite, Beatriz   +8 more
core   +1 more source

Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR

open access: yes, 2009
In recent years there has been increased interest in using SAR to study and monitor glaciers and ice sheets for glaciological and climate change research.
Sharma, Jayanti   +2 more
core  

A Dual-Channel Passive Limb Imaging System (DUALIS) for Mars with UV Airglow-Based CO2 Retrieval and 557.7 nm Doppler Wind Imaging Interferometry

open access: yesRemote Sensing
Characterizing both the CO2 distribution and wind dynamics in the Martian mesosphere and lower thermosphere is vital for planetary atmospheric science and mission planning. In this work, we propose a novel dual-channel passive limb-viewing imaging system designed to simultaneously observe partial CO2 column density and line-of-sight (LOS) wind speed ...
Yanqiang Wang   +6 more
openaire   +1 more source

Optoelectronic speckle shearing interferometry [PDF]

open access: yes, 1996
This thesis describes the implementation of enhanced signal processing techniques in electronic speckle shearing interferometry, including two-wavelength slope measurement, phase stepping, and heterodyning and stroboscopic illumination in vibration ...
Huang, Jen-Rong
core  

Vegetation, topography and snow melt at the Forest-Tundra Ecotone in arctic Europe: a study using synthetic aperture radar [PDF]

open access: yes, 2003
This research was conducted as part of DART (Dynamic Response of the Forest-Tundra Ecotone to Environmental Change), a four year (1998-2002) European Commission funded international programme of research addressing the potential dynamic response of the ...
Dean, Andrew Mark
core  

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