Publications
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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 future event
Authors
Maureen A. L. Walton, Lydia M. Staisch, Tina Dura, Jessie K. Pearl, Brian L. 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 Wirth
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, National Cooperative Geologic Mapping Program, Geosciences and Environmental Change Science Center, 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 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 directions, resp
Authors
Mehmet Çelebi, 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
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 heaviest assembli
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
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 earthquakes that al
Authors
Sarah E. Minson, Annemarie S. Baltay, Elizabeth S. Cochran, Sara McBride, Kevin R. Milner
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 during me
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
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 structural
Authors
Mehmet Çelebi, S. F. Ghahari, Hamid Haddadi, Ertugrul Taciroglu
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 on July 5
Authors
Tao Ruan, Qingkai Kong, Yawen Zhang, Sara McBride, Qin Lv
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 from +80 to +1
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, Gonçalo Vieira, Guido Grosse, Paul Overduin, Ingmar Nitze, Christopher V. Maio, Jacquelyn R. Overbeck, Mette Bendixen, Piotr Zagórski, Vladimir Romanovsky
Mars Subsurface Water Ice Mapping 2.0 data products and results
This work describes the results of the Mars Subsurface Water Ice Mapping (SWIM) project, with results on the distribution of ice on Mars from geomorphic, radar, and thermal analyses.
Authors
Nathaniel E Putzig, Gareth A Morgan, Zachary M Bain, David M Hollibaugh Baker, Ali M Bramson, Samuel W Courville, Colin M. Dundas, Rachel H Hoover, Stefano Nerozzi, Asmin V Pathare, Matthew R Perry, Eric I Petersen, Hanna G Sizemore, Bruce A Campbell, Marco Mastrogiuseppe, Michael T. Mellon, Isaac B. Smith
Landslide guide for residents of Puerto Rico
No abstract available.
Authors
Lindsay Ann Davis, Jocelyn West, Lori Peek, K. Stephen Hughes, James Joyce, William Schulz, Jonathan W. Godt, Darysabel Perez Martinez, Gisela Baez Sanchez, Glorymar Gomez Perez, Carolina Hincapie Cardenas, Christa von Hillebrandt, Lorna Jaramillo-Nieves, Jenniffer Santos-Hernandez, Raquel Lugo Bendezú, Yahaira Álvarez Gandía