Publications
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Editorial: Flooding on coral reef-lined coasts: Current state of knowledge and future challenges Editorial: Flooding on coral reef-lined coasts: Current state of knowledge and future challenges
No abstract available.
Authors
William Skirving, Andrew Pomeroy, Robert T. McCall, John Marra, Curt D. Storlazzi
Modeling hydrologic processes associated with soil saturation and debris flow initiation during the September 2013 storm, Colorado Front Range Modeling hydrologic processes associated with soil saturation and debris flow initiation during the September 2013 storm, Colorado Front Range
Seven days of extreme rainfall during September 2013 produced more than 1100 debris flows in the Colorado Front Range, about 78% of which occurred on south-facing slopes (SFS). Previously published soil moisture (volumetric water content) observations suggest that SFS were wetter than north-facing slopes (NFS) during the event, which contrasts with soil moisture patterns observed during...
Authors
Sujana Timilsina, Jeffrey D. Niemann, Sara L. Rathburn, Francis K. Rengers, Peter A. Nelson
Toward physics-based nonergodic PSHA: A prototype fully-deterministic seismic hazard model for southern California Toward physics-based nonergodic PSHA: A prototype fully-deterministic seismic hazard model for southern California
We present a nonergodic framework for probabilistic seismic‐hazard analysis (PSHA) that is constructed entirely of deterministic, physical models. The use of deterministic ground‐motion simulations in PSHA calculations is not new (e.g., CyberShake), but prior studies relied on kinematic rupture generators to extend empirical earthquake rupture forecasts. Fully dynamic models, which...
Authors
Kevin R. Milner, Bruce E. Shaw, Christine A. Goulet, Keith B. Richards-Dinger, Scott Callaghan, Thomas H. Jordan, James H. Dieterich, Edward H. Field
A subset of CyberShake ground-motion time series for response-history analysis A subset of CyberShake ground-motion time series for response-history analysis
This manuscript describes a subset of CyberShake numerically simulated ground motions that were selected and vetted for use in engineering response-history analyses. Ground motions were selected that have seismological properties and response spectra representative of conditions in the Los Angeles area, based on disaggregation of seismic hazard. Ground motions were selected from millions...
Authors
Jack W. Baker, Sanaz Rezaeian, Christine A. Goulet, Nico Luco, Ganyu Teng
Toward an integrative geological and geophysical view of Cascadia subduction zone earthquakes Toward an integrative geological and geophysical view of Cascadia subduction zone earthquakes
The Cascadia subduction zone (CSZ) is an exceptional geologic environment for recording evidence of land level changes, tsunamis, and ground motion that reveals at least 19 great megathrust earthquakes over the past 10 kyr. Such earthquakes are among the most impactful natural hazards on Earth, transcend national boundaries, and can have global impact. Reducing the societal impacts of...
Authors
Maureen A. L. Walton, Lydia M. Staisch, Tina Dura, Jessie K. Pearl, Brian Sherrod, Joan S. Gomberg, Simon E. Engelhart, Anne Trehu, Janet Watt, Jonathan P. Perkins, Robert C. Witter, Noel Bartlow, Chris Goldfinger, Harvey Kelsey, Ann Morey, Valerie J. Sahakian, Harold Tobin, Kelin Wang, Ray Wells, Erin A. Wirth
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, National Cooperative Geologic Mapping Program, Geosciences and Environmental Change Science Center, John Wesley Powell Center for Analysis and Synthesis, Pacific Coastal and Marine Science Center, Core Preparation and Analysis Laboratory and Sample Repositories, Deep Sea Exploration, Mapping and Characterization, Subduction Zone Science
Seismic response of a typical shear-wall dominated high-rise condominium building during the January 7, 2020 Mw6.4 Indios, Puerto Rico earthquake Seismic response of a typical shear-wall dominated high-rise condominium building during the January 7, 2020 Mw6.4 Indios, Puerto Rico earthquake
Seismic response records were retrieved from the monitored 21-story (53.26-m-tall) typical Puerto Rican reinforced-concrete shear-wall dominated El Castillo Building in Mayaguez, 50 km from the mainshock epicenter of the January 7, 2020, Mw6.4 offshore Indios, Puerto Rico earthquake. The shear-wall-to-floor areas of the building are 0.97 and 3.49 in the longitudinal and transverse...
Authors
Mehmet Celebi, Eduardo Miranda, Jose A. Martinez-Cruzado
Karachi effects of the Makran earthquake and tsunami of November 1945: Mercury spilled, tide gauge impaired, seawalls overrun, boats displaced, mosque flooded Karachi effects of the Makran earthquake and tsunami of November 1945: Mercury spilled, tide gauge impaired, seawalls overrun, boats displaced, mosque flooded
An earthquake and tsunamiI on November 28, 1945, sourced near the Makran coast of the Arabian Sea, disturbed port facilities and fishing villages to the east at Karachi Harbour. Seismic waves, some 300 kilometers from their Makran source, spilled mercury high in a lighthouse at Manora. One liter of the heavy, toxic liquid escaped from an annular trough in which one of the world’s...
Authors
Brian F. Atwater, Haider Hasan, Ghazala Naeem, Din Mohammad Kakar, Asaf Humayun, Seshachalam Srinivasalu, Julia Elton, Noorul Ayen Hasan, Abdullah Usman, Hira Ashfaq Lodhi, Shoaib Ahmed, Lindsey M. Wright, Loyce M. Adams
Shaking is almost always a surprise: The earthquakes that produce significant ground motion Shaking is almost always a surprise: The earthquakes that produce significant ground motion
Although small earthquakes are expected to produce weak shaking, ground motion is highly variable and there are outlier earthquakes that generate more shaking than expected—sometimes significantly more. We explore datasets of M 0.5–8.3 earthquakes to determine the relative impact of frequent, smaller-magnitude earthquakes that rarely produce strong ground motion, to rare, large...
Authors
Sarah E. Minson, Annemarie S. Baltay Sundstrom, Elizabeth S. Cochran, Sara K. McBride, Kevin R. Milner
Minimal stratigraphic evidence for coseismic coastal subsidence during 2000 yr of megathrust earthquakes at the central Cascadia subduction zone Minimal stratigraphic evidence for coseismic coastal subsidence during 2000 yr of megathrust earthquakes at the central Cascadia subduction zone
Lithology and microfossil biostratigraphy beneath the marshes of a central Oregon estuary limit geophysical models of Cascadia megathrust rupture during successive earthquakes by ruling out >0.5 m of coseismic coastal subsidence for the past 2000 yr. Although the stratigraphy in cores and outcrops includes as many as 12 peat-mud contacts, like those commonly inferred to record subsidence...
Authors
Alan Nelson, Andrea D. Hawkes, Yuki Sawai, Ben P. Hotron, Robert C. Witter, Lee-Ann Bradley, Niamh Cahill
Response of the tallest California building during the Mw7.1 July 5, 2019 Ridgecrest, California earthquake Response of the tallest California building during the Mw7.1 July 5, 2019 Ridgecrest, California earthquake
The 73-story Wilshire Grand in downtown Los Angeles is the recently constructed tallest building in California. It is designed in conformance with performance-based design procedures. The lateral load resisting system of the building is designed with concrete core shear walls, three outriggers with buckling restrained braces (BRBs) located along the height and two three-story truss-belt...
Authors
Mehmet Celebi, S. F. Ghahari, Hamid Haddadi, Ertugrul Taciroglu
An analysis of Twitter responses to the 2019 Ridgecrest Earthquake sequence An analysis of Twitter responses to the 2019 Ridgecrest Earthquake sequence
Previous research has shown that online social networks can provide valuable insights regarding collective human responses to extreme natural events, such as earthquakes. Most previous studies focused on one large earthquake, while the 2019 Ridgecrest earthquakes involved two significant earthquakes occurring within a short period of time (a M6.4 foreshock on July 4 and a M7.1 mainshock...
Authors
Tao Ruan, Qingkai Kong, Yawen Zhang, Sara K. McBride, Qin Lv
Coastal permafrost erosion Coastal permafrost erosion
Highlights • Since the early 2000s, erosion of permafrost coasts in the Arctic has increased at 13 of 14 sites with observational data that extend back to ca. 1960 and ca. 1980, coinciding with warming temperatures, sea ice reduction, and permafrost thaw. • Permafrost coasts along the US and Canadian Beaufort Sea experienced the largest increase in erosion rates in the Arctic, ranging...
Authors
Benjamin M. Jones, Anna M. Irrgang, Louise M. Farquharson, Hugues Lantuit, Dustin Whalen, Stanislav Ogorodov, Mikhail Grigoriev, Craig E. Tweedie, Ann E. Gibbs, Matt C Strzelecki, Alisa Baranskaya, Nataliya Belova, Anatoly Sinitsyn, Art Kroon, Alexey Maslakov, Goncalo Vieira, Guido Grosse, Paul Overduin, Ingmar Nitze, Christopher V. Maio, Jacquelyn R. Overbeck, Mette Bendixen, Piotr Zagorski, Vladimir Romanovsky