Search Results - "Tsai, Victor C."

Understanding the amplitudes of noise correlation measurements by Tsai, Victor C.

“…Cross correlation of ambient seismic noise is known to result in time series from which station‐station travel‐time measurements can be made. Part of the…”
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A model for seasonal changes in GPS positions and seismic wave speeds due to thermoelastic and hydrologic variations by Tsai, Victor C.

“…It is known that GPS time series contain a seasonal variation that is not due to tectonic motions, and it has recently been shown that crustal seismic…”
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On establishing the accuracy of noise tomography travel-time measurements in a realistic medium by Tsai, Victor C.

“…It has previously been shown that the Green's function between two receivers can be retrieved by cross-correlating time series of noise recorded at the two…”
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Elastic Impact Consequences for High‐Frequency Earthquake Ground Motion by Tsai, Victor C., Hirth, Greg

“…A fundamental question of earthquake science is what produces damaging high‐frequency ground motion, with the classic Brune‐Haskell model postulating that…”
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Earthquake ground motion amplification for surface waves by Bowden, Daniel C., Tsai, Victor C.

“…Surface waves from earthquakes are known to cause strong damage, especially for larger structures such as skyscrapers and bridges. However, common practice in…”
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The Yellowstone magmatic system from the mantle plume to the upper crust by Huang, Hsin-Hua, Lin, Fan-Chi, Schmandt, Brandon, Farrell, Jamie, Smith, Robert B., Tsai, Victor C.

“…The Yellowstone supervolcano is one of the largest active continental silicic volcanic fields in the world. An understanding of its properties is key to…”
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Geometric and level set tomography using ensemble Kalman inversion by Muir, Jack B, Tsai, Victor C

“…SUMMARY Tomography is one of the cornerstones of geophysics, enabling detailed spatial descriptions of otherwise invisible processes. However, due to the…”
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A physical model of the high‐frequency seismic signal generated by debris flows by Farin, Maxime, Tsai, Victor C., Lamb, Michael P., Allstadt, Kate E.

“…We propose a physical model for the high‐frequency (>1 Hz) spectral distribution of seismic power generated by debris flows. The modeled debris flow is assumed…”
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Joint inversion of Rayleigh wave phase velocity and ellipticity using USArray: Constraining velocity and density structure in the upper crust by Lin, Fan-Chi, Schmandt, Brandon, Tsai, Victor C.

“…Rayleigh wave ellipticity, or H/V ratio, observed on the surface is particularly sensitive to shallow earth structure. In this study, we jointly invert…”
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Subseasonal changes observed in subglacial channel pressure, size, and sediment transport by Gimbert, Florent, Tsai, Victor C., Amundson, Jason M., Bartholomaus, Timothy C., Walter, Jacob I.

“…Water that pressurizes the base of glaciers and ice sheets enhances glacier velocities and modulates glacial erosion. Predicting ice flow and erosion therefore…”
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The Seismic Signature of Debris Flows: Flow Mechanics and Early Warning at Montecito, California by Lai, Voon Hui, Tsai, Victor C., Lamb, Michael P., Ulizio, Thomas P., Beer, Alexander R.

“…Debris flows are concentrated slurries of water and sediment that shape the landscape and pose a major hazard to human life and infrastructure. Seismic ground…”
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High‐Frequency Ground Motions of Earthquakes Correlate With Fault Network Complexity by Chatterjee, Avigyan, Trugman, Daniel T., Hirth, Greg, Lee, Jaeseok, Tsai, Victor C.

“…Understanding the generation of damaging, high‐frequency ground motions during earthquakes is essential both for fundamental science and for effective hazard…”
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Tidally Modulated Glacial Slip and Tremor at Helheim Glacier, Greenland by Yan, Peng, Holland, David M., Tsai, Victor C., Vaňková, Irena, Xie, Surui

“…Numerical modeling of ice sheet motion and hence projections of global sea level rise require information about the evolving subglacial environment, which…”
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High-resolution precipitation monitoring with a dense seismic nodal array by Hua, Junlin, Wu, Mengxi, Mulholland, Jake P., Neelin, J. David, Tsai, Victor C., Trugman, Daniel T.

“…Accurate precipitation monitoring is crucial for understanding climate change and rainfall-driven hazards at a local scale. However, the current suite of…”
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Multiple fluvial processes detected by riverside seismic and infrasound monitoring of a controlled flood in the Grand Canyon by Schmandt, Brandon, Aster, Richard C., Scherler, Dirk, Tsai, Victor C., Karlstrom, Karl

“…As rivers transport water and sediment across Earth's surface, they radiate elastic and acoustic waves. We use seismic and infrasound observations during a…”
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Rupture complexity of the 1994 Bolivia and 2013 Sea of Okhotsk deep earthquakes by Zhan, Zhongwen, Kanamori, Hiroo, Tsai, Victor C., Helmberger, Donald V., Wei, Shengji

“…The physical mechanism of deep earthquakes (depth >300 km) remains enigmatic, partly because their rupture dimensions are difficult to estimate due to their…”
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A unified model for transient subglacial water pressure and basal sliding by Tsai, Victor C., Smith, Laurence C., Gardner, Alex S., Seroussi, Helene

“…Changes in water pressure at the beds of glaciers greatly modify their sliding rate, affecting rates of ice mass loss and sea level change. However, there is…”
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An explicit relationship between time-domain noise correlation and spatial autocorrelation (SPAC) results by Tsai, Victor C., Moschetti, Morgan P.

“…The success of recent ambient noise tomographic studies is now understood to arise due to cross-correlation properties documented in the acoustics community…”
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Estimating the effect of Earth elasticity and variable water density on tsunami speeds by Tsai, Victor C., Ampuero, Jean-Paul, Kanamori, Hiroo, Stevenson, David J.

“…The speed of tsunami waves is typically calculated using the shallow‐water approximation over a rigid‐body Earth. Recent comparisons of tsunami arrival times…”
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A simple physics-based improvement to the positive degree day model by TSAI, VICTOR C., RUAN, XIAOZHOU

“…Meltwater is important to understanding glacier health and dynamics. Since melt measurements are uncommon, ice ablation estimates are often based on models…”
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