Ambient seismic noise monitoring and imaging at the Theistareykir geothermal field (Iceland)

In autumn 2017 a network of 14 broadband seismic stations was deployed at the Theistareykir high temperature geothermal field (NE Iceland). This experiment was conducted as part of the current efforts to characterize the field's main structures, and possible short and long term stress variations due to the ongoing fluid injection and extraction...

Potential of Using DAS within a Traffic Light System at a Geothermal Site

We consider an upcoming Dutch geothermal site where planned production and injection wells will be equipped with distributed acoustic sensing (DAS) instrumentation for acquiring both active and passive monitoring data. Here, we focus on an approach to simulate synthetic DAS data of induced seismicity using wave propagation modeling. By comparing...

Ambient noise seismic reflection interferometry at the Los Humeros Geothermal Field Mexico

In the past two decades, a limited but steadily growing number of papers were published on successful retrieval of P-wave reflections from ambient seismic noise. Subsurface reflection images can provide higher structural detail as compared to velocity images from tomographic inversion of surface waves extracted from ambient noise. But the...

The potential of distributed acoustic sensing (DAS) monitoring systems for seismicity monitoring to feed traffic light systems

In this paper, we address the potential of distributed acoustic sensing (DAS) monitoring systems for seismicity monitoring to feed traffic light systems. DAS monitoring systems are recognized as serious alternative for traditional seismic monitoring systems and their capabilities for monitoring of earthquake data have been demonstrated recently....

Passive body-wave interferometric imaging with directionally constrained migration

Passive seismic interferometry enables the estimation of the reflection response of the subsurface using passive receiver recordings at the surface from sources located deep in the Earth. Interferometric imaging makes use of this retrieved reflection response in order to study the subsurface. Successful interferometric imaging relies on the...

Studying CO2 storage with ambient-noise seismic interferometry: A combined numerical feasibility study and field-data example for Ketzin, Germany

Seismic interferometry applied to ambient-noise measurements allows the retrieval of the seismic response between pairs of receivers. We studied ambient-noise seismic interferometry (ANSI) to retrieve time-lapse reflection responses from a reservoir during CO2 geologic sequestration, using the case of the experimental site of Ketzin, Germany. We...

Four years of experience with a permanent seismic monitoring array at the Ketzin CO2 storage pilot site

CO2 was injected into a saline aquifer near the town of Ketzin in Germany from July 2008 to August 2013. To monitor CO2- migration close to the injection well, TNO installed a fixed 2D seismic array of 120 meters length in 2009, with 3- component (3- C) geophones at the surface, 4-component receivers at 50 meters depth and a central vertical...

GHGT-11 - Experiences with a permanently installed seismic monitoring array at the CO2 storage site at Ketzin (Germany): A status overview

Since July 2008, CO2 is injected into a saline aquifer near the town of Ketzin in Germany. For monitoring the CO2-migration close to the injection well, TNO installed a fixed 2D seismic array of 120 meters length in 2009, with 3-component geophones at the surface, 4-component receivers at 50 meters depth and a central vertical array of 4...

The first results of continuous passive surface seismic monitoring at the CO2 injection site of ketzin

Since July 2008 CO<inf>2</inf> is injected into a saline aquifer near Ketzin, in Germany. The reservoir used for CO<inf>2</inf> injection is the Stuttgart Formation of Triassic age, located at a depth of about 650 m. Close to the injection well, TNO designed and implemented a permanent shallow seismic monitoring system. The system consists of 3C...