Mapping a part of Neuquén basin in Argentina by global-phase H/V spectral ratio

Y. Nishitsuji, E. Ruigrok, M. Gomez, D. Draganov

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

We investigated the applicability of global phases (epicentral distances of ≥ 120° and ≥ 150°) for the H/V spectral ratio to identify the fundamental resonance frequency. We applied the method to delineate a part of Neuquén basin in Argentina without the need for active seismic sources. We obtained fairly identifiable fundamental resonance frequencies in the range 0.15 Hz to 2.5 Hz. Receiver-side resonances were pronounced by stacking the H/V spectral ratio over many earthquake recordings. By doing so, the same fundamental resonances were found by using different window (P and S-phases) as well as different epicentral distances (≥ 120° and ≥ 150°). Our result, assuming average velocity, shows identical features in comparison with both the Bouguer anomaly and the active seismic profile nearby, indicating that our method is reliable. The method we demonstrate here can be applied in the fields particularly when the seismic array of long-term purposes is available.

Original languageEnglish
Title of host publication77th EAGE Conference and Exhibition 2015
Subtitle of host publicationEarth Science for Energy and Environment
PublisherEAGE
Pages1856-1860
Number of pages5
ISBN (Electronic)9781510806627
DOIs
Publication statusPublished - 1 Jan 2015
Event77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment - Madrid, Spain
Duration: 1 Jun 20154 Jun 2015

Conference

Conference77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment
CountrySpain
CityMadrid
Period1/06/154/06/15

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