Full-Waveform based methods for Microseismic Monitoring Operations: an Application to Natural and Induced Seismicity in the Hengill Geothermal Area, Iceland

Rossi, Camilla and Grigoli, Francesco and Cesca, Simone and Heimann, Sebastian and Gasperini, Paolo and Hjörleifsdóttir, Vala and Dahm, Torsten and Bean, Christopher J. and Wiemer, Stefan and Scarabello, Luca and Nooshiri, Nima and Clinton, John F. and Obermann, Anne and Ágústsson, Kristján and Ágústsdóttir, Thorbjörg (2020) Full-Waveform based methods for Microseismic Monitoring Operations: an Application to Natural and Induced Seismicity in the Hengill Geothermal Area, Iceland. Advances in Geoscience, 54. pp. 129-136. ISSN 1680-7340 Online ISSN 1680-7359

Share :
Mastodon Twitter Facebook Email

[thumbnail of Full-Waveform based methods for Microseismic Monitoring Operations.pdf] Text
Full-Waveform based methods for Microseismic Monitoring Operations.pdf - Published Version

Download (4MB)
Official URL: https://adgeo.copernicus.org/articles/54/129/2020/

Abstract

Geothermal systems in the Hengill volcanic area, SW Iceland, started to be exploited for electrical power and heat production since the late 1960s. Today the two largest operating geothermal power plants are located at Nesjavellir and Hellisheiði. This area is a complex tectonic and geothermal site, located at the triple junction between the Reykjanes Peninsula (RP), the Western Volcanic Zone (WVZ), and the South Iceland Seismic Zone (SISZ). The region is seismically highly active with several thousand earthquakes located yearly. The origin of such earthquakes may be either natural or anthropogenic. The analysis of microseismicity can provide useful information on natural active processes in tectonic, geothermal and volcanic environments as well as on physical mechanisms governing induced events. Here, we investigate the microseismicity occurring in Hengill area, using a very dense broadband seismic monitoring network deployed in Hellisheiði since November 2018, and apply sophisticated full-waveform based method for detection and
location. Improved locations and first characterization indicate that it is possible to identify different types of microseismic clusters, which are associated with either production/ injection or the tectonic setting of the geothermal area.

Item Type: Article
Divisions: School of Cosmics Physics > Geophysics
Date Deposited: 03 Nov 2021 12:56
Last Modified: 15 Dec 2022 18:41
URI: https://dair.dias.ie/id/eprint/1161

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year