Inter-Source Interferometry of Seismic Body Waves: Required Conditions and Examples

Saengduean, Patipan; Moschetti, Morgan P.; Snieder, Roel

doi:10.1007/s00024-021-02814-y

Cited by 3 publications

(2 citation statements)

References 44 publications

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“…Like inter‐receiver correlations, inter‐source correlations provide additional and significant constraints on the Earth's internal structure. Inter‐source correlations can turn seismic events into virtual receivers in areas remote from seismic networks or at specific depths underground (Curtis & Halliday, 2010; Curtis et al., 2009; Liu et al., 2016; Poliannikov et al., 2012; Saengduean et al., 2021; Shen & Zhan, 2020; Tonegawa & Nishida, 2010). This allows for forming deep virtual seismometers to detect seismic signals sensitive to deep‐earth structures with minimal signal disturbance due to shallow‐depth structure heterogeneities (Shen & Zhan, 2020; Shen et al., 2021).…”

Section: Introductionmentioning

confidence: 99%

On the Formation of Global Inter‐Source Correlations and Applications to Constrain the Interiors of the Earth and Other Terrestrial Planets

Wang

Tkalčić

2023

JGR Solid Earth

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The cross‐correlation stack of earthquake late‐coda between seismic receivers on a global scale – global inter‐receiver correlogram – exhibits numerous features that provide information on the Earth's structure. The cross‐correlation stack between seismic sources (global inter‐source correlogram) can also be constructed, and, in theory, it should reproduce the correlation features seen in the inter‐receiver correlogram. However, practical attempts at global inter‐source correlograms have not produced the theoretical expectations. Namely, the obtained inter‐source correlograms are void of discernable correlation features. Here, we address this problem and document the steps that have to be undertaken to produce the inter‐source global correlogram with the equivalent abundance of correlation features. We show that forming inter‐source correlation features requires constructive contributions determined by specific source mechanisms and source‐receiver geometries. They are overwhelmed by destructive contributions if seismic records of all available sources and source‐receiver geometries are used. Building upon that, we present an effective procedure for constructing global inter‐source correlations through a rigorous selection of source mechanisms and source‐receiver geometries. The resulting inter‐source correlations exhibit numerous prominent correlation features as predicted. Notably, this method enables the construction of global inter‐source correlations in a special case with a single seismic receiver. Furthermore, we explore and demonstrate the feasibility of utilizing single‐receiver inter‐source correlations to constrain the interiors of the Earth and other terrestrial bodies. Our study facilitates practical applications of global inter‐source correlations, providing additional constraints on the Earth's structure and offering an effective routine to probe the interiors of other planets and moons using currently affordable resources.

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Section: Introductionmentioning

confidence: 99%

On the Formation of Global Inter‐Source Correlations and Applications to Constrain the Interiors of the Earth and Other Terrestrial Planets

Wang

Tkalčić

2023

JGR Solid Earth

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“…Just as with interreceiver SI, the stationary-phase region is paramount in retrieving the desired arrivals (i.e., direct arrivals and reflections) with intersource SI (Hong and Menke, 2006;Curtis et al, 2009;Saengduean et al, 2021). In intersource SI, the summation of correlated responses is over receiver positions, meaning that the stationaryphase requirements depend on the receiver-array aperture and spatial sampling.…”

Section: Introductionmentioning

confidence: 99%

Towards adapting reverse vertical seismic profiling for ambient-noise imaging with transient sources: Automatic estimation of stationary-phase receivers for improved retrieval of the interferometric Green’s function

et al. 2022

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The majority of ambient-noise studies are performed with sensor arrays located at the surface. Passive recordings containing seismic arrivals from subsurface sources could be seen as having a geometry resembling reverse vertical seismic profiling (rVSP). In such scenarios, the inter-source seismic-interferometry technique can be used to redatum the surface receivers to the subsurface source positions resulting in virtual shot gathers at depth. The success of the interferometric processing primarily requires that a correlation panel created in the interferometric process contains stationary-phase regions that, when summed, retrieve events with correct timing, while nonstationary contributions are canceled. We address the combination of the rVSP configuration and ambient-noise measurements. We propose a prototype of a data-driven technique allowing to adapt the summation process such that changes in the stationary-phase requirements imposed by changes in the noise-sources distribution can be adaptively satisfied without the need for array redeployment. We propose to identify the receivers located in the stationary-phase regions by scanning for stationary contributions in the correlation panel prior to stacking. Our method uses the correlation coefficient and time-windowing to distinguish between stationary and non-stationary arrivals. The improved Greens function estimate is obtained by limiting the summation to only those receivers that, when summed, enhance the stationary and attenuate the non-stationary contributions. We test this using a simple 2D numerical example to show a practical way to alleviate insufficient receiver coverage. We demonstrate the theoretical possibility to improve the inter-source Greens function estimates without explicit knowledge of the target and the source distribution. However, our data-driven approach has the disadvantage of being limited to scenarios in which the correlation panel from all receivers contains identifiable stationary-phase arrivals.

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High-resolution seismic velocity structure using induced inter-event interferometry at the geothermal sites, Geysers, Eastern California

Shirzad

2024

Geothermics

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Inter-Source Interferometry of Seismic Body Waves: Required Conditions and Examples

Cited by 3 publications

References 44 publications

On the Formation of Global Inter‐Source Correlations and Applications to Constrain the Interiors of the Earth and Other Terrestrial Planets

On the Formation of Global Inter‐Source Correlations and Applications to Constrain the Interiors of the Earth and Other Terrestrial Planets

Towards adapting reverse vertical seismic profiling for ambient-noise imaging with transient sources: Automatic estimation of stationary-phase receivers for improved retrieval of the interferometric Green’s function

High-resolution seismic velocity structure using induced inter-event interferometry at the geothermal sites, Geysers, Eastern California

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