Passive Processing of Active Nodal Seismic Data: Estimation of Vp∕Vs Ratios to Characterize Structure and Hydrology of an Alpine Valley Infill

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dc.contributor.authorBehm, Michael
dc.contributor.authorCheng, Feng
dc.contributor.authorPatterson, Anna
dc.contributor.authorSoreghan, Gerilyn S.
dc.date.accessioned2020-01-29T17:47:34Z
dc.date.available2020-01-29T17:47:34Z
dc.date.issued2019-08-15
dc.description.abstractThe advent of cable-free nodal arrays for conventional seismic reflection and refraction experiments is changing the acquisition style for active-source surveys. Instead of triggering short recording windows for each shot, the nodes are continuously recording over the entire acquisition period from the first to the last shot. The main benefit is a significant increase in geometrical and logistical flexibility. As a by-product, a significant amount of continuous data might also be collected. These data can be analyzed with passive seismic methods and therefore offer the possibility to complement subsurface characterization at marginal additional cost. We present data and results from a 2.4 km long active-source profile, which have recently been acquired in western Colorado (US) to characterize the structure and sedimentary infill of an over-deepened alpine valley. We show how the “leftover” passive data from the active-source acquisition can be processed towards a shear wave velocity model with seismic interferometry. The shear wave velocity model supports the structural interpretation of the active P-wave data, and the P-to-S-wave velocity ratio provides new insights into the nature and hydrological properties of the sedimentary infill. We discuss the benefits and limitations of our workflow and conclude with recommendations for the acquisition and processing of similar datasets.en_US
dc.description.peerreviewYesen_US
dc.description.sponsorshipThis research has been partially supported by the National Science Foundation (NSF-EAR-1338331). Open Access fees paid for in whole or in part by the University of Oklahoma Libraries.en_US
dc.identifier.citationBehm, M., Cheng, F., Patterson, A., and Soreghan, G. S. 2019. Passive processing of active nodal seismic data: estimation of Vp∕Vs ratios to characterize structure and hydrology of an alpine valley infill. Solid Earth, 10, 1337–1354, https://doi.org/10.5194/se-10-1337-2019en_US
dc.identifier.doi10.5194/se-10-1337-2019en_US
dc.identifier.urihttps://hdl.handle.net/11244/323332
dc.languageen_USen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectInterferometryen_US
dc.subjectgeologyen_US
dc.subjectgeophysicsen_US
dc.subjectpassive dataen_US
dc.titlePassive Processing of Active Nodal Seismic Data: Estimation of Vp∕Vs Ratios to Characterize Structure and Hydrology of an Alpine Valley Infillen_US
dc.typeArticleen_US
ou.groupMewbourne College of Earth and Energy::School of Geosciencesen_US

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