Publications
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Review: Progress in rotational ground-motion observations from explosions and local earthquakes in Taiwan
Rotational motions generated by large earthquakes in the far field have been successfully measured, and observations agree well with the classical elasticity theory. However, recent rotational measurements in the near field of earthquakes in Japan and in Taiwan indicate that rotational ground motions are 10 to 100 times larger than expected from the classical elasticity theory. The near-field stro
Authors
William H. K. Lee, Bor-Shouh Huang, Charles A. Langston, Chin-Jen Lin, Chun-Chi Liu, Tzay-Chyn Shin, Ta-Liang Teng, Chien-Fu Wu
How the continents deform: The evidence from tectonic geodesy
Space geodesy now provides quantitative maps of the surface velocity field within tectonically active regions, supplying constraints on the spatial distribution of deformation, the forces that drive it, and the brittle and ductile properties of continental lithosphere. Deformation is usefully described as relative motions among elastic blocks and is block-like because major faults are weaker than
Authors
Wayne R. Thatcher
Deep low-frequency earthquakes in tremor localize to the plate interface in multiple subduction zones
Deep tremor under Shikoku, Japan, consists primarily, and perhaps entirely, of swarms of low-frequency earthquakes (LFEs) that occur as shear slip on the plate interface. Although tremor is observed at other plate boundaries, the lack of cataloged low-frequency earthquakes has precluded a similar conclusion about tremor in those locales. We use a network autocorrelation approach to detect and loca
Authors
Justin R. Brown, Gregory C. Beroza, Satoshi Ide, David R. Shelly, Kazuaki Ohta, Susan Y. Schwartz, Wolfgang Rabbel, M. Thorwart, Honn Kao
Accretionary orogens through Earth history
Accretionary orogens form at intraoceanic and continental margin convergent plate boundaries. They include the supra-subduction zone forearc, magmatic arc and back-arc components. Accretionary orogens can be grouped into retreating and advancing types, based on their kinematic framework and resulting geological character. Retreating orogens (e.g. modern western Pacific) are undergoing long-term ex
Authors
Peter A. Cawood, A. Kroner, W.J. Collins, T.M. Kusky, Walter D. Mooney, B.F. Windley
Shallow seismic structure of Kunlun fault zone in northern Tibetan Plateau, China: Implications for the 2001 M s8.1 Kunlun earthquake
The shallow seismic velocity structure of the Kunlun fault zone (KLFZ) was jointly deduced from seismic refraction profiling and the records of trapped waves that were excited by five explosions. The data were collected after the 2001 Kunlun Ms8.1 earthquake in the northern Tibetan Plateau. Seismic phases for the in-line record sections (26 records up to a distance of 15 km) along the fault zone w
Authors
Chun-Yong Wang, Walter D. Mooney, Z. Ding, J. Yang, Z. Yao, H. Lou
Probabilistic liquefaction hazard mapping
Many investigators have applied the liquefaction potential index (LPI) to map regional liquefaction hazard. LPI, which integrates the liquefaction potential of susceptible soil elements at a specific location into a single value, has been used to assess both (1) spatial variability of liquefaction potential, and (2) liquefaction potential of surficial geologic units. A promising application to map
Authors
Thomas L. Holzer
Submarine landslide as the source for the October 11, 1918 Mona Passage tsunami: Observations and modeling
The October 11, 1918 ML 7.5 earthquake in the Mona Passage between Hispaniola
and Puerto Rico generated a local tsunami that claimed approximately 100 lives
along the western coast of Puerto Rico. The area affected by this tsunami is
now significantly more populated. Newly acquired high-resolution bathymetry
and seismic reflection lines in the Mona Passage show a fresh submarine landslide
15
Authors
A.M. López-Venegas, Uri S. ten Brink, Eric L. Geist
Origin of meter-size granite basins in the southern Sierra Nevada, California
Meter-size granite basins are found in a 180-km belt extending south from the South Fork of the Kings River to Lake Isabella on the west slope of the southern Sierra Nevada, California. Their origin has long been debated. A total of 1,033 basins have been inventoried at 221 sites. The basins occur on bedrock granitic outcrops at a median elevation of 1,950 m. Median basin diameter among 30 of the
Authors
James G. Moore, Mary A. Gorden, Joel E. Robinson, Barry C. Moring
Report on the Aseismic Slip, Tremor, and Earthquakes Workshop
This report summarizes the discussions and information presented during the workshop on Aseismic Slip, Tremor, and Earthquakes. Workshop goals included improving coordination among those involved in conducting research related to these phenomena, assessing the implications for earthquake hazard assessment, and identifying ways to capitalize on the education and outreach opportunities presented by
Authors
Joan Gomberg, Evelyn Roeloffs, Anne Trehu, Herb Dragert, Charles Meertens
The coral reef of South Moloka'i, Hawai'i— Portrait of a sediment-threatened fringing reef
Moloka‘i, with the most extensive coral reef in the main Hawaiian Islands, is especially sacred to Hina, the Goddess of the Moon. As Hinaalo, she is the Mother of the Hawaiian people; as Hinapuku‘a, she is the Goddess of Fishermen; and in the form Hina‘opuhalako‘a, she is the Goddess who gave birth to coral, coral reefs, and all spiny marine organisms. Interdependence between the reef’s living res
Steady and intermittent slipping in a model of landslide motion regulated by pore-pressure feedback
This paper studies a parsimonious model of landslide motion, which consists of the one-dimensional diffusion equation (for pore pressure) coupled through a boundary condition to a first-order ODE (Newton's second law). Velocity weakening of sliding friction gives rise to nonlinearity in the model. Analysis shows that solutions of the model equations exhibit a subcritical Hopf bifurcation in which
Authors
David G. Schaeffer, Richard M. Iverson
Seismicity and deformation induced by magma accumulation at three basaltic volcanoes
We analyzed the evolution of volcano‐tectonic (VT) seismicity and deformation at three basaltic volcanoes (Kilauea, Mauna Loa, Piton de la Fournaise) during phases of magma accumulation. We observed that the VT earthquake activity displays an accelerating evolution at the three studied volcanoes during the time of magma accumulation. At the same times, deformation rates recorded at the summit of K
Authors
O. Lengline, David Marsan, J.-L. Got, Virginie Pinel, Valerie Ferrazzini, Paul G. Okubo