The Seismic Signature of California's Earthquakes, Droughts, and Floods

Clements, Timothy; Denolle, Marine

doi:10.1029/2022jb025553

Cited by 6 publications

(2 citation statements)

References 203 publications

(421 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Atmospheric temperature variations have been used to explain seasonal and daily changes of dv / v in many regions, including California (Clements & Denolle, 2018, 2023; Hillers et al., 2015; G. Li & Ben‐Zion, 2023; Meier et al., 2010; Qiu et al., 2020), Kyushu Island (Q. Wang et al., 2017), northern Chile (Richter et al., 2014), and Mars (Qin et al., 2023). The nonlinear relation between air temperature and seismic velocity changes can be modeled in terms of thermo‐elastic strain at the subsurface (Ben‐Zion & Leary, 1986; Berger, 1975; Tsai, 2011).…”

Section: Discussionmentioning

confidence: 99%

Monitoring Terrestrial Water Storage, Drought and Seasonal Changes in Central Oklahoma With Ambient Seismic Noise

Zhang,

Luo,

Ben‐Zion

et al. 2023

Geophysical Research Letters

View full text Add to dashboard Cite

Significant imbalances in terrestrial water storage (TWS) and severe drought have been observed around the world as a consequence of climate changes. Improving our ability to monitor TWS and drought is critical for water‐resource management and water‐deficit estimation. We use continuous seismic ambient noise to monitor temporal evolution of near‐surface seismic velocity, dv/v, in central Oklahoma from 2013 to 2022. The derived dv/v is found to be negatively correlated with gravitational measurements and groundwater depths, showing the impact of groundwater storage on seismic velocities. The hydrological effects involving droughts and recharge of groundwater occur on a multi‐year time scale and dominate the overall derived velocity changes. The thermoelastic response to atmospheric temperature variations occurs primarily on a yearly timescale and dominates the superposed seasonal velocity changes in this study. The occurrences of droughts appear simultaneously with local peaks of dv/v, demonstrating the sensitivity of near‐surface seismic velocities to droughts.

show abstract

Section: Discussionmentioning

confidence: 99%

Monitoring Terrestrial Water Storage, Drought and Seasonal Changes in Central Oklahoma With Ambient Seismic Noise

Zhang,

Luo,

Ben‐Zion

et al. 2023

Geophysical Research Letters

View full text Add to dashboard Cite

show abstract

“…Annual atmospheric temperature variations have been used to explain seasonal changes of dv/v in many regions, including California (Meier et al, 2010;Hillers et al, 2015;Qiu et al, 2020;Clements & Denolle, 2023), Kyushu Island (Q. Wang et al, 2017), northern Chile (Richter et al, 2014), and Mars (Qin et al, 2023).…”

Section: Thermo-elastic Effects On the Seasonal Changes Of Near-surfa...mentioning

confidence: 99%

Monitoring terrestrial water storage, drought and seasonal changes in central Oklahoma with ambient seismic noise

Zhang¹,

Luo

Ben‐Zion

et al. 2023

Preprint

View full text Add to dashboard Cite

Significant imbalances in terrestrial water storage (TWS) and severe drought have been observed around the world as a consequence of climate changes. Improving our ability to monitor TWS and drought is critical for water-resource management and water-deficit estimation. We use continuous seismic ambient noise to monitor temporal evolution of near-surface seismic velocity, dv/v, in central Oklahoma from 2013 to 2022. The derived dv/v is found to be negatively correlated with gravitational measurements and groundwater depths, showing the impact of groundwater storage on seismic velocities. Seasonal cycling of dv/v follows atmospheric temperature changes with a phase shift, which can be explained by thermo-elastic strain in the uppermost crust and sedimentary cover. The occurrences of droughts appear simultaneously with the local peaks of dv/v, demonstrating the sensitivity of near-surface seismic velocities to droughts. The results illustrate the potential of using seismic data for monitoring TWS and drought at regional to local scales.

show abstract

Monitoring Velocity Change Over 20 Years at Parkfield

Okubo,

Delbridge,

Denolle

2024

JGR Solid Earth

View full text Add to dashboard Cite

We monitored the time history of the velocity change (dv/v) from 2002 to 2022 to investigate temporal changes in the physical state near the Parkfield Region of the San Andreas Fault throughout the interseismic period. Following the coseismic decrease in dv/v caused by the 2003 San Simeon (SS) and the 2004 Parkfield earthquakes, the dv/v heals logarithmically and shows a net long‐term increase in which the current dv/v level is equivalent to, or exceeding, the value before the 2003 SS earthquake. We investigated this long‐term trend by fitting the model accounting for the environmental and coseismic effects to the channel‐weighted dv/v time series. We confirmed with the metrics of Akaike information criterion and Bayesian information criterion that the additional term of either a linear trend term, or a residual healing term for the case where the healing had not been completed before the SS earthquake occurred, robustly improved the fit to the data. We eventually evaluated the sensitivity of the dv/v time history to the GNSS‐derived strain field around the fault. The cumulative dilatational strain spatially averaged around the seismic stations shows a slight extension, which is opposite to what would be expected for an increase in dv/v. However, the cumulative rotated axial strain shows compression in a range near the maximum contractional horizontal strain (azimuth of N35°W to N45°E), suggesting that the closing of pre‐existing microcracks aligned perpendicular to the axial contractional strains would be a candidate to cause the long‐term increase observed in the multiple station pairs.

show abstract

The Seismic Signature of California's Earthquakes, Droughts, and Floods

Abstract: The state of California is subject to extreme natural events. It hosts infrequent, large magnitude (M w ≥ 7) earth-

Cited by 6 publications

References 203 publications

Monitoring Terrestrial Water Storage, Drought and Seasonal Changes in Central Oklahoma With Ambient Seismic Noise

Monitoring Terrestrial Water Storage, Drought and Seasonal Changes in Central Oklahoma With Ambient Seismic Noise

Monitoring terrestrial water storage, drought and seasonal changes in central Oklahoma with ambient seismic noise

Monitoring Velocity Change Over 20 Years at Parkfield

Contact Info

Product

Resources

About