Publications
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Slip distribution and rupture history of the August 11, 2012, double earthquakes in Ahar – Varzaghan, Iran, using joint inversion of teleseismic broadband and local strong motion data Slip distribution and rupture history of the August 11, 2012, double earthquakes in Ahar – Varzaghan, Iran, using joint inversion of teleseismic broadband and local strong motion data
We use combined teleseismic and strong motion data sets to investigate finite-fault slip models for a double of earthquakes that occurred on August 11, 2012, in northwestern Iran near the cities of Ahar and Varzaghan. The data include teleseismic P-waveforms retrieved from broadband seismic stations located between 30°–94° from the earthquakes and local strong motion data recorded by the...
Authors
Atefeh Saltanatpouri, Stephen H. Hartzell, Habib Rahimi, Rahmatollah Rouhollahi, Rouholla Amiri Fard
The making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18) The making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18)
The NEAM Tsunami Hazard Model 2018 (NEAMTHM18) is a probabilistic hazard model for tsunamis generated by earthquakes. It covers the coastlines of the North-eastern Atlantic, the Mediterranean, and connected seas (NEAM). NEAMTHM18 was designed as a three-phase project. The first two phases were dedicated to the model development and hazard calculations, following a formalized decision...
Authors
Roberto Basili, Beatriz Brizuela, Andre Herrero, Sarfraz Iqbal, Stefano Lorito, Francesco Emanuele Maesano, Shane Murphy, Paolo Perfetti, Fabrizio Romano, Antonio Scala, Jacopo Selva, Matteo Taroni, Mara Monica Tiberti, Hong Kie Thio, R. Tonini, Manuela Volpe, Sylfest Glimsdal, Carl B. Harbitz, Finn Lovholt, Maria Ana Baptista, Fernando Carrilho, Luis M. A. Matias, Rachid Omira, Andrey Babeyko, Andreas Hoechner, Mucahit Gurbuz, Onur Pekcan, A. Yalciner, Miquel Canals, Galderic Lastras, Apostolos Agalos, Gerassimo Papadapoulos, Ioanna Triantafyllou, Sabah Benchekroun, Hedi Agrebi Jaouadi, Samir Ben Abdallah, Atef Bouallegue, Hassene Hamdi, Foued Oueslati, A. Amato, Alberto Armigliato, Jorn Behrens, Gareth Davies, Daniela Di Bucci, Mauro Dolce, Eric L. Geist, Jose Manuel Gonzalez Vida, Mauricio Gonzalez, Jorges Macias Sanchez, C. Meletti, Ceren Ozer Sozdinler, Marco Pagani, Tom Parsons, Jascha Polet, William Power, Mathilde B. Sorensen, Andrey Zaytsev
The role of surges during periods of very shallow water on sediment transport over tidal flats The role of surges during periods of very shallow water on sediment transport over tidal flats
Periods of very shallow water (water depth in the order of 10 cm) occur daily on tidal flats because of the propagation of tides over very gently sloping beds, leading to distinct morphodynamical phenomena. To improve the understanding of the characteristics of velocity and suspended sediment concentration (SSC) surges and their contribution to sediment transport and local bed changes...
Authors
Qian Zhang, Zheng Gong, Changkuan Zhang, Jessica R. Lacy, Bruce E. Jaffe, Beibei Xu, Xindi Chen
Incorporating the effects of complex soil layering and thickness local variability into distributed landslide susceptibility assessments Incorporating the effects of complex soil layering and thickness local variability into distributed landslide susceptibility assessments
Incorporating the influence of soil layering and local variability into the parameterizations of physics-based numerical models for distributed landslide susceptibility assessments remains a challenge. Typical applications employ substantial simplifications including homogeneous soil units and soil-hydraulic properties assigned based only on average textural classifications; the...
Authors
F. Fusco, Benjamin B. Mirus, Rex L. Baum, D. Calcaterra, P. De Vita
Final report to SCEC on the October 27, 2020 SCEC workshop ‘dynamic rupture TAG – The 2020 ingredients workshop – Rock properties (SCEC rroject 20188)’ Final report to SCEC on the October 27, 2020 SCEC workshop ‘dynamic rupture TAG – The 2020 ingredients workshop – Rock properties (SCEC rroject 20188)’
This workshop was the third in our series of four SCEC5 workshops designed to evaluate the importance of each of the four ingredients required for dynamic earthquake rupture simulations. The four ingredients are: fault geometry, fault friction, rock properties, and initial stress conditions (Figure 1). The previous two workshops in the ‘ingredients’ series were the November 2018 SCEC...
Authors
Ruth A. Harris, Michael Barall
Deepwater debrites and linked megaturbidites in confined basins: An example from the Onnuri Basin, East Sea of Korea Deepwater debrites and linked megaturbidites in confined basins: An example from the Onnuri Basin, East Sea of Korea
We analyzed data from seven piston cores, multi-channel seismic-reflection (MCS) and chirp profiles, and multibeam echosounder (MBES) data to study the distribution, emplacement time, sedimentary facies, and depositional processes of sediment-gravity-flow deposits in the Onnuri Basin, a confined basin in the East Sea. These data reveal that debris flows have traveled ca. 30 km downslope...
Authors
Deniz Cukur, In-Kwon Um, Jong-Hwa Chun, Gwang-Soo Lee, Gee-Too Kong, Samuel Y. Johnson, Senay Horozal
Preconditioning by sediment accumulation can produce powerful turbidity currents without major external triggers Preconditioning by sediment accumulation can produce powerful turbidity currents without major external triggers
Turbidity currents dominate sediment transfer into the deep ocean, and can damage critical seabed infrastructure. It is commonly inferred that powerful turbidity currents are triggered by major external events, such as storms, river floods, or earthquakes. However, basic models for turbidity current triggering remain poorly tested, with few studies accurately recording precise flow...
Authors
Lewis Bailey, Michael Clare, Kurt J. Rosenberger, Matthieu J.B. Cartigny, Peter J. Talling, Charles K. Paull, Roberto Gwiazda, Daniel Parsons, Stephen Simmons, Jingping Xu, Ivan Haigh, Katherine L. Maier, Mary McGann, Eve M. Lundsten
The role of the Next Generation Lunar Scientists and Engineers (NextGen) group in lunar science and exploration The role of the Next Generation Lunar Scientists and Engineers (NextGen) group in lunar science and exploration
Founded in 2008, the Next Generation Lunar Scientists and Engineers (NextGen) is a group of students and early career professionals who have a vision and passion for lunar science and exploration. NextGen organizes professional development opportunities through workshops and networking events that are designed to provide resources and training for scientists and engineers so that they...
Authors
Ryan Watkins, Lillian R. Ostrach, Sarah Valencia, Amanda Stadermann, Lora Bleacher, Noah E. Petro, Tess Caswell, Amy Fagan, Erica Jawin, Heather Meyer, Deanna Phillips, Hannah O’Brien
Geomagnetic monitoring in the mid-Atlantic United States Geomagnetic monitoring in the mid-Atlantic United States
Near historic battlegrounds of the American Civil War, southeast of Fredericksburg, Virginia, on a secluded grassy glade surrounded by forest, a specially designed observatory records the Earth’s changing magnetic field. This facility, the Fredericksburg Magnetic Observatory, is 1 of 14 observatories the U.S. Geological Survey Geomagnetism Program operates at various locations across the...
Authors
Jeffrey J. Love, Kristen A. Lewis
Preface to the Focus Section on the 2020 Intermountain West earthquakes Preface to the Focus Section on the 2020 Intermountain West earthquakes
The Intermountain West region of the United States extends from the eastern margin of the Sierra Nevada and Cascade Mountains in the west to the Rocky Mountains in the east. The region is characterized by dextral shear along the eastern margin of the Sierra Nevada and nearly east-west extension in the Basin and Range. This region experienced four significant earthquake sequences in the...
Authors
Ryan D. Gold, Jayne Bormann, Keith D. Koper
2021 Computational Infrastructure for Geodynamics Developers Workshop 2021 Computational Infrastructure for Geodynamics Developers Workshop
The CIG Developers Workshop resulted in a number of recommendations that we think will help expand the CIG developer community, make software more accessible to new users, and increase developer productivity through use of common infrastructure and best practices for software development. This includes building a broad user base with sufficient support through documentation, tutorials...
Authors
Brad T. Aagaard, Jed Brown, Catherin Cooper, Rene Gassmoeller, Lorraine Hwang, Marc Spiegelman
Response of an asymmetrical five-story building in Fairbanks, Alaska during the November 30, 2018 M7.1 Anchorage, Alaska earthquake Response of an asymmetrical five-story building in Fairbanks, Alaska during the November 30, 2018 M7.1 Anchorage, Alaska earthquake
A recently constructed, five-story, asymmetrical steel building on the campus of the University of Alaska, Fairbanks was equipped with a strong-motion array that recorded the M7.1 Anchorage earthquake of November 30, 2018 at an epicentral distance of 408 km. The largest recorded peak accelerations at the basement and top of the building are 0.021g and 0.071g, respectively. The steel...
Authors
Mehmet Celebi, Natalia Ruppert