Articles | Volume 20, issue 12
https://doi.org/10.5194/nhess-20-3333-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-20-3333-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Dec 2020
Research article |
| 09 Dec 2020
| 09 Dec 2020
Spatiotemporal changes of seismicity rate during earthquakes
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, China
Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China
Yang-Yi Sun
Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China
Strong Wen
Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi, Taiwan
Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China
Li-Ching Lin
Department of System Engineering and Naval Architecture, National Taiwan Ocean University, Keelung, Taiwan
Huaizhong Yu
China Earthquake Networks Center, Beijing, China
Xuemin Zhang
Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China
Yongxin Gao
School of Civil Engineering, Hefei University of Technology, Hefei, China
Chi-Chia Tang
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, China
Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China
Cheng-Horng Lin
Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan
Jann-Yenq Liu
Center for Astronautical Physics and Engineering, National Central
University, Taoyuan, Taiwan
Department of space science and engineering, National Central University, Taoyuan, Taiwan
Center for Space and Remote Sensing Research, National Central University, Taoyuan, Taiwan
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Niranjan Joshi, Björn Lund, and Roland Roberts
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2023-213, https://doi.org/10.5194/nhess-2023-213, 2023
Revised manuscript under review for NHESS
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Here we document the occurrence of an historical earthquake that occurred in the European western Southern Alps in the sixth century CE. Analysis of the effects due to earthquake shaking in the city of Como (N Italy) and a comparison with dated offshore landslides in the Alpine lakes allowed us to make an inference about the possible magnitude and the location of the seismic source for this event.
Graeme Weatherill, Fabrice Cotton, Guillaume Daniel, Irmela Zentner, Pablo Iturrieta, and Christian Bosse
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2023-98, https://doi.org/10.5194/nhess-2023-98, 2023
Revised manuscript accepted for NHESS
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New generations of seismic hazard models are developed with sophisticated approaches to quantify uncertainties in our knowledge of earthquake process. To understand why and how recent state-of-the-art seismic hazard models for France, Germany and Europe differ despite similar underlying assumptions, we present a systematic approach to investigate model-to-model differences and to quantify and visualise them while accounting for their respective uncertainties.
Simone Francesco Fornasari, Deniz Ertuncay, and Giovanni Costa
Nat. Hazards Earth Syst. Sci., 23, 3219–3234, https://doi.org/10.5194/nhess-23-3219-2023, https://doi.org/10.5194/nhess-23-3219-2023, 2023
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We analysed the background seismic noise for the Italian strong motion network by developing the Italian accelerometric low- and high-noise models. Spatial and temporal variations of the noise levels have been analysed. Several stations located near urban areas are affected by human activities, with high noise levels in the low periods. Our results provide an overview of the background noise of the strong motion network and can be used as a station selection criterion for future research.
Subash Ghimire, Philippe Guéguen, Adrien Pothon, and Danijel Schorlemmer
Nat. Hazards Earth Syst. Sci., 23, 3199–3218, https://doi.org/10.5194/nhess-23-3199-2023, https://doi.org/10.5194/nhess-23-3199-2023, 2023
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This study explores the efficacy of several machine learning models for damage characterization, trained and tested on the Database of Observed Damage (DaDO) for Italian earthquakes. Reasonable damage prediction effectiveness (68 % accuracy) is observed, particularly when considering basic structural features and grouping the damage according to the traffic-light-based system used during the post-disaster period (green, yellow, and red), showing higher relevancy for rapid damage prediction.
Ekbal Hussain, Endra Gunawan, Nuraini Rahma Hanifa, and Qori'atu Zahro
Nat. Hazards Earth Syst. Sci., 23, 3185–3197, https://doi.org/10.5194/nhess-23-3185-2023, https://doi.org/10.5194/nhess-23-3185-2023, 2023
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The earthquake potential of the Lembang Fault, located near the city of Bandung in West Java, Indonesia, is poorly understood. Bandung has a population of over 8 million people. We used satellite data to estimate the energy storage on the fault and calculate the likely size of potential future earthquakes. We use simulations to show that 1.9–2.7 million people would be exposed to high levels of ground shaking in the event of a major earthquake on the fault.
Roberto Basili, Laurentiu Danciu, Céline Beauval, Karin Sesetyan, Susana Pires Vilanova, Shota Adamia, Pierre Arroucau, Jure Atanackov, Stephane Baize, Carolina Canora, Riccardo Caputo, Michele Matteo Cosimo Carafa, Edward Marc Cushing, Susana Custódio, Mine Betul Demircioglu Tumsa, João C. Duarte, Athanassios Ganas, Julián García-Mayordomo, Laura Gómez de la Peña, Eulàlia Gràcia, Petra Jamšek Rupnik, Hervé Jomard, Vanja Kastelic, Francesco Emanuele Maesano, Raquel Martín-Banda, Sara Martínez-Loriente, Marta Neres, Hector Perea, Barbara Šket Motnikar, Mara Monica Tiberti, Nino Tsereteli, Varvara Tsironi, Roberto Vallone, Kris Vanneste, Polona Zupančič, and Domenico Giardini
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2023-118, https://doi.org/10.5194/nhess-2023-118, 2023
Revised manuscript accepted for NHESS
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This study presents the European Fault-Source Model 2020 (EFSM20), a dataset of 1,248 geologic crustal faults and four subduction systems, each having the necessary parameters to forecast long-term earthquake occurrences in the European continent. This dataset constituted one of the main inputs for the recently released European Seismic Hazard Model 2020, a key instrument to mitigate seismic risk in Europe. EFSM20 adopts recognized open-standard formats, and it is openly accessible and reusable.
Huaiqun Zhao, Wenkai Chen, Can Zhang, and Dengjie Kang
Nat. Hazards Earth Syst. Sci., 23, 3031–3050, https://doi.org/10.5194/nhess-23-3031-2023, https://doi.org/10.5194/nhess-23-3031-2023, 2023
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Early emergency response requires improving the utilization value of the data available in the early post-earthquake period. We proposed a method for assessing seismic intensities by analyzing early aftershock sequences using the robust locally weighted regression program. The seismic intensity map evaluated by the method can reflect the range of the hardest-hit areas and the spatial distribution of the possible property damage and casualties caused by the earthquake.
Ann Elizabeth Morey and Chris Goldfinger
EGUsphere, https://doi.org/10.21203/rs.3.rs-2277419/v2, https://doi.org/10.21203/rs.3.rs-2277419/v2, 2023
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This study uses the characteristics from a deposit attributed to the 1700 CE Cascadia earthquake to identify other subduction earthquake deposits in sediments from two lakes located near the California/Oregon border. Seven deposits were identified in these records and an age-depth model suggests that these correlate in time to the largest Cascadia earthquakes preserved in the offshore record suggesting that inland lakes can be good recorders of Cascadia earthquakes.
Asim M. Khawaja, Behnam Maleki Asayesh, Sebastian Hainzl, and Danijel Schorlemmer
Nat. Hazards Earth Syst. Sci., 23, 2683–2696, https://doi.org/10.5194/nhess-23-2683-2023, https://doi.org/10.5194/nhess-23-2683-2023, 2023
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Testing of earthquake forecasts is important for model verification. Forecasts are usually spatially discretized with many equal-sized grid cells, but often few earthquakes are available for evaluation, leading to meaningless tests. Here, we propose solutions to improve the testability of earthquake forecasts and give a minimum ratio between the number of earthquakes and spatial cells for significant tests. We show applications of the proposed technique for synthetic and real case studies.
Athanasios N. Papadopoulos, Philippe Roth, Laurentiu Danciu, Paolo Bergamo, Francesco Panzera, Donat Fäh, Carlo Cauzzi, Blaise Duvernay, Alireza Khodaverdian, Pierino Lestuzzi, Ömer Odabaşi, Ettore Fagà, Paolo Bazzurro, Michèle Marti, Nadja Valenzuela, Irina Dallo, Nicolas Schmid, Philip Kästli, Florian Haslinger, and Stefan Wiemer
EGUsphere, https://doi.org/10.5194/egusphere-2023-1504, https://doi.org/10.5194/egusphere-2023-1504, 2023
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The Earthquake Risk Model of Switzerland (ERM-CH23), released in early 2023, is the culmination of a multidisciplinary effort aiming to achieve, for the first time, a comprehensive assessment of the potential consequences of earthquakes on the Swiss building stock and population. ERM-CH23 provides risk estimates for various impact metrics, ranging from economic loss as a result of damage to buildings and their contents, to human losses, such as deaths, injuries and displaced population.
Lukas Bodenmann, Jack W. Baker, and Božidar Stojadinović
Nat. Hazards Earth Syst. Sci., 23, 2387–2402, https://doi.org/10.5194/nhess-23-2387-2023, https://doi.org/10.5194/nhess-23-2387-2023, 2023
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Understanding spatial patterns in earthquake-induced ground motions is key for assessing the seismic risk of distributed infrastructure systems. To study such patterns, we propose a novel model that accounts for spatial proximity, as well as site and path effects, and estimate its parameters from past earthquake data by explicitly quantifying the inherent uncertainties.
José A. Álvarez-Gómez, Paula Herrero-Barbero, and José J. Martínez-Díaz
Nat. Hazards Earth Syst. Sci., 23, 2031–2052, https://doi.org/10.5194/nhess-23-2031-2023, https://doi.org/10.5194/nhess-23-2031-2023, 2023
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The strike-slip Carboneras fault is one of the largest sources in the Alboran Sea, with it being one of the faster faults in the eastern Betics. The dimensions and location of the Carboneras fault imply a high seismic and tsunami threat. In this work, we present tsunami simulations from sources generated with physics-based earthquake simulators. We show that the Carboneras fault has the capacity to generate locally damaging tsunamis with inter-event times between 2000 and 6000 years.
Antonio Posadas, Denisse Pasten, Eugenio E. Vogel, and Gonzalo Saravia
Nat. Hazards Earth Syst. Sci., 23, 1911–1920, https://doi.org/10.5194/nhess-23-1911-2023, https://doi.org/10.5194/nhess-23-1911-2023, 2023
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In this paper we understand an earthquake from a thermodynamics point of view as an irreversible transition; then it must suppose an increase in entropy. We use > 100 000 earthquakes in northern Chile to test the theory that Shannon entropy, H, is an indicator of the equilibrium state. Using variation in H, we were able to detect major earthquakes and their foreshocks and aftershocks, including the 2007 Mw 7.8 Tocopilla earthquake and 2014 Mw 8.1 Iquique earthquake.
Dirsa Feliciano, Orlando Arroyo, Tamara Cabrera, Diana Contreras, Jairo Andrés Valcárcel Torres, and Juan Camilo Gómez Zapata
Nat. Hazards Earth Syst. Sci., 23, 1863–1890, https://doi.org/10.5194/nhess-23-1863-2023, https://doi.org/10.5194/nhess-23-1863-2023, 2023
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This article presents the number of damaged buildings and estimates the economic losses from a set of earthquakes in Sabana Centro, a region of 11 towns in Colombia.
Andrea Antonucci, Andrea Rovida, Vera D'Amico, and Dario Albarello
Nat. Hazards Earth Syst. Sci., 23, 1805–1816, https://doi.org/10.5194/nhess-23-1805-2023, https://doi.org/10.5194/nhess-23-1805-2023, 2023
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The earthquake effects undocumented at 228 Italian localities were calculated through a probabilistic approach starting from the values obtained through the use of an intensity prediction equation, taking into account the intensity data documented at close localities for a given earthquake. The results showed some geographical dependencies and correlations with the intensity levels investigated.
Yi-Ying Wen, Chien-Chih Chen, Strong Wen, and Wei-Tsen Lu
Nat. Hazards Earth Syst. Sci., 23, 1835–1846, https://doi.org/10.5194/nhess-23-1835-2023, https://doi.org/10.5194/nhess-23-1835-2023, 2023
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Knowing the spatiotemporal seismicity patterns prior to impending large earthquakes might help earthquake hazard assessment. Several recent moderate earthquakes occurred in the various regions of Taiwan, which help to further investigate the spatiotemporal seismic pattern related to the regional tectonic stress. We should pay attention when a seismicity decrease of 2.5 < M < 4.5 events around the southern Central Range or an accelerating seismicity of 3 < M < 5 events appears in central Taiwan.
Luca Schilirò, Mauro Rossi, Federica Polpetta, Federica Fiorucci, Carolina Fortunato, and Paola Reichenbach
Nat. Hazards Earth Syst. Sci., 23, 1789–1804, https://doi.org/10.5194/nhess-23-1789-2023, https://doi.org/10.5194/nhess-23-1789-2023, 2023
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We present a database of the main scientific articles published on earthquake-triggered landslides in the last 4 decades. To enhance data viewing, the articles were catalogued into a web-based GIS, which was specifically designed to show different types of information, such as bibliometric information, the relevant topic and sub-topic category (or categories), and earthquake(s) addressed. Such information can be useful to obtain a general overview of the topic, especially for a broad readership.
Simone Barani, Gabriele Ferretti, and Davide Scafidi
Nat. Hazards Earth Syst. Sci., 23, 1685–1698, https://doi.org/10.5194/nhess-23-1685-2023, https://doi.org/10.5194/nhess-23-1685-2023, 2023
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In the present study, we analyze ground-motion hazard maps and hazard disaggregation in order to define areas in Italy where liquefaction triggering due to seismic activity can not be excluded. The final result is a screening map for all of Italy that classifies sites in terms of liquefaction triggering potential according to their seismic hazard level. The map and the associated data are freely accessible at the following web address: www.distav.unige.it/rsni/milq.php.
Midhat Fayaz, Shakil A. Romshoo, Irfan Rashid, and Rakesh Chandra
Nat. Hazards Earth Syst. Sci., 23, 1593–1611, https://doi.org/10.5194/nhess-23-1593-2023, https://doi.org/10.5194/nhess-23-1593-2023, 2023
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Earthquakes cause immense loss of lives and damage to properties, particularly in major urban centres. The city of Srinagar, which houses around 1.5 million people, is susceptible to high seismic hazards due to its peculiar geological setting, urban setting, demographic profile, and tectonic setting. Keeping in view all of these factors, the present study investigates the earthquake vulnerability of buildings in Srinagar, an urban city in the northwestern Himalayas, India.
Mathilde B. Sørensen, Torbjørn Haga, and Atle Nesje
Nat. Hazards Earth Syst. Sci., 23, 1577–1592, https://doi.org/10.5194/nhess-23-1577-2023, https://doi.org/10.5194/nhess-23-1577-2023, 2023
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Most Norwegian landslides are triggered by rain or snowmelt, and earthquakes have not been considered a relevant trigger mechanism even though some cases have been reported. Here we systematically search historical documents and databases and find 22 landslides induced by eight large Norwegian earthquakes. The Norwegian earthquakes induce landslides at distances and over areas that are much larger than those found for global datasets.
Chiara Varone, Gianluca Carbone, Anna Baris, Maria Chiara Caciolli, Stefania Fabozzi, Carolina Fortunato, Iolanda Gaudiosi, Silvia Giallini, Marco Mancini, Luca Paolella, Maurizio Simionato, Pietro Sirianni, Rose Line Spacagna, Francesco Stigliano, Daniel Tentori, Luca Martelli, Giuseppe Modoni, and Massimiliano Moscatelli
Nat. Hazards Earth Syst. Sci., 23, 1371–1382, https://doi.org/10.5194/nhess-23-1371-2023, https://doi.org/10.5194/nhess-23-1371-2023, 2023
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In 2012, Italy was struck by a seismic crisis characterized by two main shocks and relevant liquefaction events. Terre del Reno is one of the municipalities that experienced the most extensive liquefaction effects; thus it was chosen as case study for a project devoted to defining a new methodology to assess the liquefaction susceptibility. In this framework, about 1800 geotechnical, geophysical, and hydrogeological investigations were collected and stored in the publicly available PERL dataset.
Samuel Roeslin, Quincy Ma, Pavan Chigullapally, Joerg Wicker, and Liam Wotherspoon
Nat. Hazards Earth Syst. Sci., 23, 1207–1226, https://doi.org/10.5194/nhess-23-1207-2023, https://doi.org/10.5194/nhess-23-1207-2023, 2023
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This paper presents a new framework for the rapid seismic loss prediction for residential buildings in Christchurch, New Zealand. The initial model was trained on insurance claims from the Canterbury earthquake sequence. Data science techniques, geospatial tools, and machine learning were used to develop the prediction model, which also delivered useful insights. The model can rapidly be updated with data from new earthquakes. It can then be applied to predict building loss in Christchurch.
Sasan Motaghed, Mozhgan Khazaee, Nasrollah Eftekhari, and Mohammad Mohammadi
Nat. Hazards Earth Syst. Sci., 23, 1117–1124, https://doi.org/10.5194/nhess-23-1117-2023, https://doi.org/10.5194/nhess-23-1117-2023, 2023
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We modify the probabilistic seismic hazard analysis (PSHA) formulation by replacing the Gutenberg–Richter power law with the SCP (Sotolongo-Costa and Posadas) non-extensive model for earthquake size distribution and call it NEPSHA. The proposed method (NEPSHA) is implemented in the Tehran region, and the results are compared with the classic PSHA method. The hazard curves show that NEPSHA gives a higher hazard, especially in the range of practical return periods.
Paola Sbarra, Pierfrancesco Burrato, Valerio De Rubeis, Patrizia Tosi, Gianluca Valensise, Roberto Vallone, and Paola Vannoli
Nat. Hazards Earth Syst. Sci., 23, 1007–1028, https://doi.org/10.5194/nhess-23-1007-2023, https://doi.org/10.5194/nhess-23-1007-2023, 2023
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Earthquakes are fundamental for understanding how the earth works and for assessing seismic risk. We can easily measure the magnitude and depth of today's earthquakes, but can we also do it for pre-instrumental ones? We did it by analyzing the decay of earthquake effects (on buildings, people, and objects) with epicentral distance. Our results may help derive data that would be impossible to obtain otherwise, for any country where the earthquake history extends for centuries, such as Italy.
Haekal A. Haridhi, Bor Shouh Huang, Kuo Liang Wen, Arif Mirza, Syamsul Rizal, Syahrul Purnawan, Ilham Fajri, Frauke Klingelhoefer, Char Shine Liu, Chao Shing Lee, Crispen R. Wilson, Tso-Ren Wu, Ichsan Setiawan, and Van Bang Phung
Nat. Hazards Earth Syst. Sci., 23, 507–523, https://doi.org/10.5194/nhess-23-507-2023, https://doi.org/10.5194/nhess-23-507-2023, 2023
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Near the northern end of Sumatra, the horizontal movement Sumatran fault zone extended to its northern offshore. The movement of offshore fault segments trigger submarine landslides and induce tsunamis. Scenarios of a significant tsunami caused by the combined effect of an earthquake and its triggered submarine landslide at the coast were proposed in this study. Based on our finding, the landslide tsunami hazard assessment and early warning systems in this region should be urgently considered.
Lixin Wu, Yuan Qi, Wenfei Mao, Jingchen Lu, Yifan Ding, Boqi Peng, and Busheng Xie
Nat. Hazards Earth Syst. Sci., 23, 231–249, https://doi.org/10.5194/nhess-23-231-2023, https://doi.org/10.5194/nhess-23-231-2023, 2023
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Multiple seismic anomalies were reported to be related to the 2015 Nepal earthquake. By sufficiently investigating both the space–time features and the physical models of the seismic anomalies, the coupling mechanisms of these anomalies in 3D space were revealed and an integrated framework to strictly root the sources of various anomalies was proposed. This study provides a practical solution for scrutinizing reliable seismic anomalies from diversified earthquake observations.
David Montiel-López, Sergio Molina, Juan José Galiana-Merino, and Igor Gómez
Nat. Hazards Earth Syst. Sci., 23, 91–106, https://doi.org/10.5194/nhess-23-91-2023, https://doi.org/10.5194/nhess-23-91-2023, 2023
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One of the most effective ways to describe the seismicity of a region is to map the b-value parameter of the Gutenberg-Richter law. This research proposes the study of the spatial cell-event distance distribution to define the smoothing kernel that controls the influence of the data. The results of this methodology depict tectonic stress changes before and after intense earthquakes happen, so it could enable operational earthquake forecasting (OEF) and tectonic source profiling.
Pierre Henry, M. Sinan Özeren, Nurettin Yakupoğlu, Ziyadin Çakir, Emmanuel de Saint-Léger, Olivier Desprez de Gésincourt, Anders Tengberg, Cristele Chevalier, Christos Papoutsellis, Nazmi Postacıoğlu, Uğur Dogan, Hayrullah Karabulut, Gülsen Uçarkuş, and M. Namık Çağatay
Nat. Hazards Earth Syst. Sci., 22, 3939–3956, https://doi.org/10.5194/nhess-22-3939-2022, https://doi.org/10.5194/nhess-22-3939-2022, 2022
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Seafloor instruments at the bottom of the Sea of Marmara recorded disturbances caused by earthquakes, addressing the minimum magnitude that may be recorded in the sediment. A magnitude 4.7 earthquake caused turbidity but little current. A magnitude 5.8 earthquake caused a mudflow and strong currents that spread sediment on the seafloor over several kilometers. However, most known earthquake deposits in the Sea of Marmara spread over larger zones and should correspond to larger earthquakes.
Nicola Alessandro Pino
Nat. Hazards Earth Syst. Sci., 22, 3787–3792, https://doi.org/10.5194/nhess-22-3787-2022, https://doi.org/10.5194/nhess-22-3787-2022, 2022
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The 1908 Messina Straits earthquake is one of the most severe seismic catastrophes in human history and is periodically back in the public discussion because of a project of building a bridge across the Straits. Some models proposed for the fault assume precursory subsidence preceding the quake, resulting in a structure significantly different from the previously debated ones and important hazard implications. The analysis of the historical sea level data allows the rejection of this hypothesis.
Cited articles
Adams, J. B., Mann, M. E., and Ammann, C. M.: Proxy evidence for an El Niño-like response to volcanic forcing, Nature, 426, 274–278, 2003.
Azeem, I., Walterscheid, R. L., and Crowley, G.: Investigation of acoustic
waves in the ionosphere generated by a deep convection system using distributed networks of GPS receivers and numerical modeling, Geophys. Res.
Lett., 45, 8014–8021, 2018.
Bedford, J. R., Moreno, M., Deng, Z., Oncken, O., Schurr, B., John, T., Báez, J. C., and Bevis, M.: Months-long thousand-kilometre-scale wobbling before great subduction earthquakes, Nature, 580, 628–635, 2020.
Chang, C. H.: Introduction to the Meteorological Bureau Earthquake Monitoring
Network, Taiwan Earthquake Research Center Newsletter, Taipei, Taiwan, 2014.
Chen, C.-H.: Wide sensitive area of small foreshocks, Dryad, Dataset, https://doi.org/10.5061/dryad.1jwstqjqq, 2019.
Chen, C. H., Yeh, T. K., Liu, J. Y., Wang, C. H., Wen, S., Yen, H. Y., and Chang, S. H.: Surface Deformation and Seismic Rebound: implications and
applications, Surv. Geophys., 32, 291–313, 2011.
Chen, C. H., Wen, S., Liu, J. Y., Hattori, K., Han, P., Hobara, Y., Wang, C. H., Yeh, T. K., and Yen, H. Y.: Surface displacements in Japan before the 11 March 2011 M9.0 Tohoku-Oki earthquake, J. Asian Earth Sci., 80, 165–171, 2014.
Chen, C.-H., Yeh, T.-K., Wen, S., Meng, G., Han, P., Tang, C.-C., Liu, J.-Y.,
and Wang, C.-H.: Unique Pre-Earthquake Deformation Patterns in the Spatial
Domains from GPS in Taiwan, Remote Sens., 12, 366, https://doi.org/10.3390/rs12030366, 2020a.
Chen, C.-H., Su, X., Cheng, K.-C., Meng, G., Wen, S., Han, P., Tang, C.-C.,
Liu, J.-Y. and Wang, C.-H.: Seismo-deformation anomalies associated with the
M6.1 Ludian earthquake on August 3, 2014, Remote Sens., 12, 1067,
https://doi.org/10.3390/rs12071067, 2020b.
Chen, C.-H., Lin, L.-C., Yeh, T.-K., Wen, S., Yu, H., Chen, Y., Gao, Y., Han, P., Sun, Y.-Y., Liu, J.-Y., Lin, C.-H., Tang, C.-C., Lin, C.-M., Hsieh, H.-H., and Lu, P.-J.: Determination of epicenters before earthquakes utilizing far seismic and GNSS data, Insights from ground vibrations, Remote
Sens., 12, 3252, https://doi.org/10.3390/rs12193252, 2020c.
Chree, C.: Some phenomena of sunspots and of terrestrial magnetism at Kew
observatory, Philos. T. Roy. Soc., 212, 75, 1913.
de Arcangelis, L., Godano, C., Grasso, J. R., and Lippiello, E.: Statistical
physics approach to earthquake occurrence and forecasting, Phys. Rep., 628,
1–91, 2016.
Dobrovolsky, I. P., Zubkov, S. I., and Miachkin, V. I.: Estimation of the size of earthquake preparation zones, Pure Appl. Geophys., 117, 1025–1044, 1979.
Ellsworth, W. L. and Beroza, G. C.: Seismic evidence for an earthquake
nucleation phase, Science, 268, 851–855, 1995.
Hayakawa, M., Kasahara, Y., Nakamura, T., Muto, F., Horie, T., Maekawa, S.,
Hobara, Y., Rozhnoi, A. A., Solovieva, M., and Molchanov, O. A.: A statistical study on the correlation between lower ionospheric perturbations as seen by subionospheric VLF/LF propagation and earthquakes, J. Geophys. Res., 115, A09305, https://doi.org/10.1029/2009JA015143, 2010.
Hayakawa, M., Kasahara, Y., Nakamura, T., Hobara, Y., Rozhnoi, A., Solovieva, M., Molchanov, O., and Korepanov, V.: Atmospheric gravity waves as a possible candidate for seismo-ionospheric perturbations, J. Atmos. Electr., 31, 129–140, 2011.
Hocke, K.: Oscillations of global mean TEC, J. Geophys. Res., 113, A04302,
https://doi.org/10.1029/2007JA012798, 2008.
JMA – Japan Meteorological Agency: The Seismological Bulletin of Japan, available at: https://www.data.jma.go.jp/svd/eqev/data/bulletin/index_e.html, last access: December 2020.
Jolliffe, I. T.: Principal Component Analysis, 2nd Edn., Springer, Berlin, 2002.
Kato, A. and Obara, K.: Step-like migration of early aftershocks following
the 2007 MW6.7 Noto-Hanto earthquake, Japan, Geophys. Res. Lett.,
41, 3864–3689, https://doi.org/10.1002/2014GL060427, 2014.
Kato, A., Obara, K., Igarashi, T., Tsuruoka, H., Nakagawa, S., and Hirata, N.: Propagation of slow slip leading up to the 2011 MW9.0 Tohoku-Oki earthquake, Science, 335, 705–708, https://doi.org/10.1126/science.1215141, 2012.
Kawamura, M., Chen, C. C., and Wu, Y. M.: Seismicity change revealed by ETAS,
PI, Z-value methods: A case study of the 2013 Nantou, Taiwan earthquake,
Tectonophysics, 634, 139–155, 2014.
Korepanov, V., Hayakawa, M., Yampolski, Y., and Lizunov, G.: AGW as a seismo-ionospheric coupling responsible agent, Phys. Chem. Earth, 34, 485–495, 2009.
Leissa, A. W.: Vibrations of plates. Ohio State University, Columbus, Ohio,
1969.
Lippiello, E., Marzocchi, W., de Arcangelis, L., and Godano, C.: Spatial
organization of foreshocks as a tool to forecast large earthquakes, Sci.
Rep., 2, 846, https://doi.org/10.1038/srep00846, 2012.
Lippiello, E., Giacco, F., Marzocchi, W., Godano, C., and Arcangelis, L. D.:
Statistical Features of Foreshocks in Instrumental and ETAS Catalogs, Pure
Appl. Geophys., 174, 1679–1697, 2017.
Lippiello, E., Godano, C., and de Arcangelis, L.: The Relevance of Foreshocks
in Earthquake Triggering: A Statistical Study, Entropy, 21, 173, 2019.
Liu, J. Y., Chen, Y. I., Chen, C. H., Liu, C. Y., Chen, C. Y., Nishihashi, M., Li, J. Z., Xia, Y. Q., Oyama, K. I., Hattori, K., and Lin, C. H.: seismoionospheric GPS total electron content anomalies observed before the 12 May 2008 Mw7.9 Wenchuan earthquake, J. Geophys. Res., 114, A04320, https://doi.org/10.1029/2008JA013698, 2009.
Liu, J. Y., Chen, C. H., Sun, Y. Y., Chen, C. H., Tsai, H. F., Yen, H. Y., Chum, J., Lastovicka, J., Yang, Q. S., Chen, W. S., and Wen, S.: The vertical
propagation of disturbances triggered by seismic waves of the 11 March 2011
M9.0 Tohoku Earthquake over Taiwan, Geophys. Res. Lett., 43, 1759–1765,
2016.
Liu, J. Y., Chen, C. H., Wu, T. Y., Chen, H. C., Hattori, K., Bleier, T.,
Kappler, K., Yang, I. C., Xia, Y., Chen, W., and Liu, Z.: Co-seismic signatures in magnetometer, geophone, and infrasound data during the Meinong
Earthquake, Terr. Atmos. Ocean Sci., 28, 683–692, 2017.
Liu, S., Tang, C. C., Chen, C. H., and Xn, R.: Spatiotemporal Evolution of the 2018 Mw6.4 Hualien Earthquake Sequence in Eastern Taiwan, Seismol. Res.
Lett., 90, 1446–1456, https://doi.org/10.1785/0220180389, 2019.
Molchanov, O. A. and Hayakawa, M.: Subionospheric VLF signal perturbations
possibly related to earthquakes, J. Geophys. Res.-Space, 103, 17489–17504, 1998.
Molchanov, O. A., Hayakawa, M., and Miyaki, K.: VLF/LF sounding of the lower
ionosphere to study the role of atmospheric oscillations in the
lithosphere-ionosphere coupling, Adv. Polar Up. Atmos. Res., 15, 146–158,
2011.
NCREE – National Center for Research on Earthquake Engineering: Seismic Array of NCREE in Taiwan, available at: http://santa.ncree.org/, last access: December 2020.
Oyama, K.-I., Devi, M., Ryu, K., Chen, C.-H., Liu J.-Y., Liu, H., Bankov, L., and Kodama, T.: Modifications of the ionosphere prior to large earthquakes: report from the Ionosphere Precursor Study Group, GeoSci. Lett., 3, 6, https://doi.org/10.1186/s40562-016-0038-3, 2016.
Reasenberg, P.: Second-order moment of central California seismicity, 1969–82, J. Geophys. Res., 90, 5479–5495, 1985.
Reasenberg, P. A.: Foreshock occurrence before large earthquakes, J. Geophys. Res., 104, 4755–4768, 1999.
Scholz, C. H.: The Mechanics of Earthquakes and Faulting, 2nd Edn., Cambridge University Press, Cambridge, UK, 2002.
Sun, Y. Y., Oyama, K.-I., Liu, J. Y., Jhuang, H. K., and Cheng, C. Z.: The neutral temperature in the ionospheric dynamo region and the ionospheric F region density during Wenchuan and Pingtung Doublet earthquakes, Nat. Hazards Earth Syst. Sci., 11, 1759–1768, https://doi.org/10.5194/nhess-11-1759-2011, 2011.
Uhrhammer, R.: Characteristics of northern and southern California seismicity, Earthq. Notes, 57, 21, 1986.
van Stiphout, T., Zhuang, J., and Marsan, D.: Seismicity declustering,
Community Online Resource for Statistical Seismicity Analysis, available at: http://www.corssa.org/en/home/ (last access: December 2020), 2012.
Vidale, J., Mori, J., and Houston, H.: Something wicked this way comes: Clues from foreshocks and earthquake nucleation, Eos Trans. AGU, 82, 68, 2001.
Walczak, P., Mezzapesa, F., Bouakline, A., Ambre, J., Bouissou, S., and Barland, S.: Real time observation of granular rock analogue material deformation and failure using nonlinear laser interferometry, arXiv: preprint, arXiv:1705.03377v1, 2017.
Wen, Y.-Y. and Chen, C.-C.: Seismicity variations prior to the 2016 ML 6.6
Meinong, Taiwan earthquake, Terr. Atmos. Ocean. Sci., 28, 739–744,
https://doi.org/10.3319/TAO.2016.12.05.01, 2017.
Wiemer, S.: A Software Package to Analyze Seismicity: ZMAP, Seismol. Res. Lett., 72, 373–382, https://doi.org/10.1785/gssrl.72.3.373, 2001.
Yeh, K. C. and Liu, C. H.: Acoustic-gravity waves in the upper atmosphere, Rev. Geophys., 12, 193– 212, 1974.
Short summary
Scientists demystify stress changes before mainshocks and utilize the foreshocks as an indicator. We investigate changes in seismicity far from mainshocks by using tens of thousands of M ≥ 2 quakes for 10 years in Taiwan and Japan. The results show that wide areas exhibit increased seismicity occurring more than several times in areas of the fault rupture. The stressed crust triggers resonance at frequencies varying from ~ 5 × 10–4 to ~ 10–3 Hz that is supported by the resonant frequency model.
Scientists demystify stress changes before mainshocks and utilize the foreshocks as an...
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