Results 61 to 70 of about 28,952 (217)

Artifactual log-periodicity in finite size data: Relevance for earthquake aftershocks [PDF]

, 2000
The recently proposed discrete scale invariance and its associated log-periodicity are an elaboration of the concept of scale invariance in which the system is scale invariant only under powers of specific values of the magnification factor. We report on
A. Johansen, Anifrani, Bowman, Brehm, D. Sornette, Geller, Gross, H. Saleur, Huang, Johansen, Johansen, Johansen, Johansen, Kisslinger, Lee, M. W. Lee, Newman, Onsager, Ouillon, Ouillon, Ouillon, Press, Reasenberg, Reasenberg, Sahimi, Saleur, Saleur, Saleur, Slutzky, Sornette, Sornette, Sornette, Sornette, Tsunogai, Tsunogai, Turcotte, Utsu, Y. Huang, Zajdenweber   +38 more
core   +2 more sources

Regional Adjustments to NGA‐West2 Ground‐Motion Models for Turkey

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 6, Page 1313-1332, May 2026.
ABSTRACT This paper presents a ground‐motion model updating (GMMU) framework to adjust NGA‐West2 models for predicting a set of intensity measures in Turkey, including peak ground acceleration (PGA), peak ground velocity (PGV), and pseudo‐spectral acceleration (PSA) at periods ranging from 0.01 to 10 s. The GMMU framework integrates bias identification
Mao‐Xin Wang, Gang Wang
wiley   +1 more source

Magnitude-Dependent Omori Law: Empirical Study and Theory

, 2004
We propose a new physically-based ``multifractal stress activation'' model of earthquake interaction and triggering based on two simple ingredients: (i) a seismic rupture results from activated processes giving an exponential dependence on the local ...
Ouillon, G., Sornette, D.
core   +1 more source

Opportunities for the U.S. Geological Survey's National Seismic Hazard Model to Improve Seismic Risk Assessment of Critical Infrastructure

Earthquake Spectra, Volume 42, Issue 2, May 2026.
As fragility and risk modeling techniques and computational capabilities evolve, complemented by moving toward more routine and systematic seismic risk assessment of all buildings and critical infrastructure, the authors pose a few critical questions to investigate how the U.S. Geological Survey (USGS) National Seismic Hazard Models (NSHMs) can be used
Kishor S. Jaiswal, N. Simon Kwong
wiley   +1 more source

Renormalization of earthquake aftershocks

, 1999
Together with the Gutenberg-Richter distribution of earthquake magnitudes, Omori's law is the best established empirical characterization of earthquake sequences and states that the number of smaller earthquakes per unit time triggered by a main shock ...
Anne Sornette, Bak, Bowman, Das, Dattatrayam, Didier Sornette, Gnedenko, Grasso, Haintz, Henderson, Hill, Hough, Huang, Kagan, Kagan, Kagan, Kagan, Kisslinger, Knopoff, Morse, Scholz, Shaw, Sornette, Steeples, Wilson   +24 more
core   +1 more source

User Acceptance and Perceptions of Earthquake Early Warning Systems as a Function of Information Type: The Case of Postearthquake Nepal

Earthquake Spectra, Volume 42, Issue 2, May 2026.
What drives user perceptions and acceptance of earthquake early warning systems (EEWS) as an emerging technology? Do distinct types of transparency into EEWS affect users’ perceptions of the system's usefulness and desirability differently? To address these questions, we focus on Nepal, an earthquake‐prone country with no active public EEWS ...
Shana Scogin, Sagar Khanal, Saphal Joshi, Rachael Lau   +3 more
wiley   +1 more source

The 2015 Gorkha Nepal Earthquake: Insights from Earthquake Damage Survey

Frontiers in Built Environment, 2015
The 2015 Gorkha Nepal earthquake caused tremendous damage and loss. To gain valuable lessons from this tragic event, an earthquake damage investigation team was dispatched to Nepal from 1 May 2015 to 7 May 2015.
Katsuichiro eGoda, Takashi eKiyota, Rama Mohan ePokhrel, Gabriele eChiaro, Toshihiko eKatagiri, Keshab eSharma, Sean eWilkinson   +6 more
doaj   +1 more source

Mainshocks are aftershocks of conditional foreshocks: How do foreshock statistical properties emerge from aftershock laws [PDF]

, 2003
The inverse Omori law for foreshocks discovered in the 1970s states that the rate of earthquakes prior to a mainshock increases on average as a power law ~ 1/(t_c-t)^p' of the time to the mainshock occurring at t_c.
Abercrombie, Agnew, Agnès Helmstetter, Aki, Berg, Bowman, Bufe, Cagnetti, Console, Davis, Didier Sornette, Dodge, Enescu, Felzer, Gabrielov, Gabrielov, Gross, Guo, Hainzl, Helmstetter, Helmstetter, Huang, Ikegami, Imoto, Jaumé, Jean-Robert Grasso, Jones, Jones, Kagan, Kagan, Kagan, Kagan, Kagan, Keilis-Borok, Keilis-Borok, Keilis-Borok, Kisslinger, Kisslinger, Knopoff, Li, Lindh, Ma, Maeda, Michael, Mogi, Mogi, Molchan, Molchan, Molchan, Molchan, Narteau, Ogata, Ogata, Ogata, Omori, Omori, Page, Papazachos, Papazachos, Papazachos, Papazachos, Pelletier, Reasenberg, Reasenberg, Reasenberg, Rotwain, Sammis, Scholz, Shaw, Smith, Smith, Sornette, Sornette, Sornette, Sornette, Stephens, Suyehiro, Tajima, Utsu, von Seggern, Wu, Wyss, Yamanaka, Yamashina, Yamashita, Yamashita, Yamashita, Zhang, Zöller   +88 more
core   +5 more sources

2025 U.S. Geological Survey National Seismic Hazard Model for Puerto Rico and the U.S. Virgin Islands: Overview of Model and Hazard Results

Earthquake Spectra, Volume 42, Issue 2, May 2026.
The U.S. Geological Survey recently updated the National Seismic Hazard Model (NSHM) for Puerto Rico and the U.S. Virgin Islands (PRVI). The first version of the PRVI NSHM was released in 2003, and therefore this 2025 update includes over 20 years of new geologic, geophysical, and engineering data, methods, and models.
Allison M. Shumway, Kevin R. Milner, Peter M. Powers, Morgan P. Moschetti, Jason M. Altekruse, Julie A. Herrick, Andrea L. Llenos, Kyle B. Withers, Edward H. Field, Brad T. Aagaard, Richard W. Briggs, Alexandra E. Hatem, Kirstie L. Haynie, Andrew J. Michael, Jessica A. Thompson Jobe, Kishor S. Jaiswal, Brandon S. Clayton, Nicolas Luco, Mark D. Petersen, Sanaz Rezaeian, Thomas L. Pratt, Yuehua Zeng   +21 more
wiley   +1 more source

From Warnings to Actions: Factors Influencing Response to Earthquake Early Warning—A Systematic Literature Review

Earthquake Spectra, Volume 42, Issue 2, May 2026.
Earthquake early warning (EEW) systems offer critical seconds for protective actions, yet their effectiveness ultimately depends on human interpretation and response. This article presents a systematic literature review of factors shaping public behavior during earthquakes and in response to EEW alerts.
Kianoush Rostami, Julia S. Becker, Raj Prasanna, Lauren J. Vinnell   +3 more
wiley   +1 more source