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Journal articles on the topic 'Number of earthquakes'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Kertanah, Alissa Chintyana, Chandrawati, Basirun, Mutia Rosiana Nita Putri, and Nasibatul Mahmudah. "A Study of Grouping of Earthquake Damage from Magnitude Scale in Lombok Using K-Means Modeling." Kappa Journal 8, no. 3 (2024): 399–403. https://doi.org/10.29408/kpj.v8i3.27563.

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This study aims to group earthquake damage from its magnitude scale and visualize it on a geographical map. The magnitude of the earthquake was grouped using the K-means model. It is one of the most popular and effective clustering models in grouping data, such as earthquake data. The dataset used in this study is earthquake data for the last ten years on Lombok Island. The optimal number of clusters was used which is 2 in this case, based on the highest Silhouette score of 0.930. The highest Silhouette score shows the optimal number of clusters. The cluster on the geographical map shows most

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2

Sinambela, Marzuki, and Eva Darnila. "VISUAL ANALYSIS OF LOCAL EARTHQUAKE IN NORTH TAPANULI BASED ON DATA SCIENCE." METHOMIKA Jurnal Manajemen Informatika dan Komputerisasi Akuntansi 7, no. 2 (2023): 363–67. http://dx.doi.org/10.46880/jmika.vol7no2.pp363-367.

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Earthquakes are natural phenomena that occur when the Earth's tectonic plates move and release energy. Big Data's emergent epistemological and research paradigms, as well as data science, an increasingly integrated field of data research, are opening up new opportunities. Visualizing earthquake data is all about understanding earthquake characteristics such as size, location and depth. The result show that September was the quietest month in terms of earthquakes, and in this graph we can see the number of earthquakes for each month in 2022. The month of October is the one that has the highest

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3

Ortega, Roberto, Dana Carciumaru, Alfredo Aguirre, Israel Santillan, and Saúl Martínez. "Insights of the September 2007 Cerralvo Earthquake–Hurricane Henriette Crisis in La Paz, Mexico: Aftershocks Detection with Artificial Neural Networks." Seismological Research Letters 92, no. 1 (2020): 67–76. http://dx.doi.org/10.1785/0220200254.

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Abstract Disastrous earthquakes and hurricanes, in general, are not contemporaneous. Here, we report the 2007 Cerralvo earthquake that had stricken the Gulf of California (GoC) when Hurricane Henriette landed during the aftershock activity. The greatest aftershock struck almost at the same time with Hurricane Henriette inducing panic among the inhabitants of La Paz, Baja California, peninsula. After the earthquake’s main event, the disaster preparedness professionals’ effort focused more on hurricane protocols than on the effects that the earthquake’s aftershocks could have been produced. This

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4

Vasylieva, I. E. "Is there any connection between solar activity and earthquakes?" Kosmìčna nauka ì tehnologìâ 26, no. 5 (2020): 90–102. http://dx.doi.org/10.15407/knit2020.05.090.

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A possible relationship between solar activity and the seismic activity of the Earth is considered. We analyzed the frequency of occurrence of earthquakes of various magnitudes with the Fourier transform: for M ≥ 7 over the period 1900—2019 and for 2.5 ≤ M ≤ 7 over the period 1973–2019. The average annual, monthly, and daily values of the solar-terrestrial variables, the number of earthquakes with intensities that fall within the specified boundaries are calculated. The epoch overlapping method was used to analyze the possible relationship between the Wolf numbers and the number of earthquakes

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5

Zheng, Tongyan, Lei Li, Chong Xu, and Yuandong Huang. "Spatiotemporal Analysis of Earthquake Distribution and Associated Losses in Chinese Mainland from 1949 to 2021." Sustainability 15, no. 11 (2023): 8646. http://dx.doi.org/10.3390/su15118646.

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A comprehensive earthquake hazard database is crucial for comprehending the characteristics of earthquake-related losses and establishing accurate loss prediction models. In this study, we compiled the earthquake events that have caused losses since 1949, and established and shared a database of earthquake hazard information for the Chinese mainland from 1949 to 2021. On this basis, we preliminarily analyzed the spatiotemporal distribution characteristics of 608 earthquake events and the associated losses. The results show the following: (1) The number of earthquakes is generally increasing, w

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Fikri, Saiyidinal, Desi Syafriani, and Fitra Hasanah. "LAND SURFACE CHANGES DUE TO BUKITTINGGI CITY EARTHQUAKE USING THE 2019-2020 DInSAR METHOD." JICE (Journal of Infrastructural in Civil Engineering) 3, no. 02 (2022): 1. http://dx.doi.org/10.33365/jice.v3i02.2128.

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Bukittinggi city is in the sink segmentation "semangko" fault line, which causes Bukittinggi City to frequently experience earthquakes. From 2019 to 2020, there have been at least 9 earthquakes above 5 on the Richter scale. DInSAR is a radar imaging method that utilizes phase, amplitude, and wavelength in its processing to obtain topography and land surface changes. This study has three aims. This research shows that the earthquake from 2019 to 2020 uses 18 pairs of sentinel-1 image scans recorded in 2019-2020 and uses DEM SRTM 30, namely the earthquake that happened on February 2, 2019, in th

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7

Satake, Kenji, and Takeo Ishibe. "Toward Homogeneous Estimation of Long-Term Seismicity from Historical Materials: Number of Felt Earthquakes in Tokyo since 1668." Seismological Research Letters 91, no. 5 (2020): 2601–10. http://dx.doi.org/10.1785/0220200060.

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Abstract Long-term seismicity in a certain region can be estimated from the number of felt earthquakes obtained from seismic intensity measurements or historical documents. To obtain a homogeneous estimate, continuous records with a uniform detection threshold are required. Seismic intensity data in Tokyo, which are measured by professional observers and archived by the Japan Meteorological Agency (JMA) since 1885, indicate that the mean annual number of felt earthquakes with intensities ≥1 and ≥2 on the JMA scale is 45 and 14, respectively. The database of felt earthquakes can be extended bac

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Pırtı, Atınç. "Investigation of the effects of Kahramanmaraş earthquake series on Cyprus Arc, Dead Sea fault, Hatay regions and stations close to two earthquakes epicenters." Geodesy and cartography 50, no. 3 (2024): 113–26. http://dx.doi.org/10.3846/gac.2024.19634.

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In various parts of the globe, there have been several earthquakes of a modest size. Monitoring the change of the points over time is a key component of typical techniques for extracting dynamic responses. This technique was unable to completely extract all of the earthquake’s dynamic properties. The GNSS precise point positioning (PPP) may be a useful tool for obtaining values of the point’s displacement that are more exact up to millimeters, which can help to overcome these flaws and evaluate the seismic wave of such earthquakes. Ultimately, PPP is a crucial tool for getting the precise obse

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9

Wang, Yu Dong, and Wen Shuai Zhang. "Comparative Study on the Earthquake-Proofing Performance of Chinese and Japanese Building Structures." Advanced Materials Research 490-495 (March 2012): 2061–65. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.2061.

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In recent years, there were frequent earthquakes happening in China. These earthquakes have give rise to a high degree of casualties. However, compared with Japan in which the number of the earthquakes is the highest in the world, China's earthquake-proofing legal standards, requirements on the earthquake-proofing designs and the rate of the earthquake-proofing technologies as well as understanding of the structure of the building are not under the immature state at the present time.

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10

Poygina, S., Nataliya Petrova, and N. Boldyreva. "GLOBAL EARTHQUAKES." Earthquakes in Northern Eurasia, no. 23 (December 15, 2020): 235–43. http://dx.doi.org/10.35540/1818-6254.2020.23.23.

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The information on global seismicity in 2014 at the level of strong earthquakes with M≥6 according to the Seismological Bulletin of the Geophysical Survey of RAS (GS RAS) is provided. The original Seismological Bulletin for 2014 contains parameters of 3268 earthquakes in the world, versus 4212 in 2013. This article analyzes 165 earthquakes with M≥6, including 16 strongest earthquakes with M≥7, and five earthquakes with M6.0–6.7, which resulted in significant casualties and destruction. The information on focal mechanisms, macroseismic effect, the number of victims, tsunamis, etc. is given. A

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11

Maslyaev, A. V. "RUSSIAN CONSTRUCTION SYSTEM DOES NOT RECOGNIZE THE IMPACT OF REPEATED EARTHQUAKES ON CONSTRUCTION SITES." ASJ. 1, no. 38 (2020): 41–49. http://dx.doi.org/10.31618/asj.2707-9864.2020.1.38.12.

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Today, many learned builders know that earthquakes in the territory of, for example, a settlement can manifest themselves in the form of the first most powerful earthquake (main underground shock), which is usually followed by a series of weaker repeated earthquakes (repetitive shocks). There are many examples of such a sequence of manifestations of strong earthquakes in a certain territory, when tens of thousands of people die in destroyed buildings during repeated exposure earthquakes. It is thanks to these examples that scientists, builders, understand the main cause of death due to repeate

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12

Roni Merdiansah, Khofifah Wulandari, Mentari Hasibuan, and Yuyun Umaidah. "Perbandingan Kinerja Model RNN, LSTM, dan BLSTM dalam Memprediksi Jumlah Gempa Bulanan di Indonesia." Jurnal Penelitian Rumpun Ilmu Teknik 3, no. 1 (2024): 262–77. http://dx.doi.org/10.55606/juprit.v3i1.3466.

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Earthquakes are natural phenomena that frequently occur in Indonesia. To identify and predict the level of earthquake activity, effective prediction methods are needed. In this study, we employed a Recurrent Neural Network (RNN) to predict the average number of earthquakes that occur each month in Indonesia. This research utilized a large amount of historical earthquake data in Indonesia. We divided this data into training and testing sets to train and evaluate our prediction model. Additionally, we used Mean Absolute Error (MAE) and Mean Squared Error (MSE) as evaluation metrics to measure th

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13

Moya, Aaron. "The MASLIS: A five-year review of Costa Rica's near real-time seismic intensity processing system." Annals of Geophysics 67 (December 3, 2024): S552. https://doi.org/10.4401/ag-9137.

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The MASLIS is an online system that displays the earthquake’s seismic intensity in near-real time. The system analyzes the data from Costa Rica’s strong motion network. When the intensity exceeds a specified intensity threshold at a number of sites, the system sends several warning messages. When it was first developed in 2019, the system was tested using scenario earthquakes. After five years of operation, this article briefly discusses its performance using actual earthquake data.

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14

CHEW, SOON-HOE, and KARMA KUENZA. "INTERPRETATION OF SEISMIC SIGNALS FOR TSUNAMIGENIC EARTHQUAKES." Journal of Earthquake and Tsunami 01, no. 02 (2007): 171–91. http://dx.doi.org/10.1142/s1793431107000109.

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Tsunami can cause severe damage to properties and loss of many human lives. Tsunami is often related to earthquakes. Within a close proximity and with similar magnitude, some earthquakes produce very severe tsunamis, e.g. the December 2004 Sumatra earthquake, and others produce very minor or insignificant wave height increase, e.g. the March 2005 Sumatra earthquake. Thus, the study of tsunamigenesis of earthquakes, i.e., whether an earthquake will generate significant tsunami, is critical to the prevention or minimization of damage due to tsunami. In this study, the seismic signals from earthq

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15

Nakachi, Hiroyuki, Norio Maki, and Haruo Hayashi. "Proposal on the Effective Use of Relief Helicopters Based on Experience in the Great East Japan Earthquake." Journal of Disaster Research 7, sp (2012): 500–510. http://dx.doi.org/10.20965/jdr.2012.p0500.

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The Great East Japan Earthquake hit a large number of prefectures and cities in eastern Japan. Devastating damage was particularly heavy in Iwate, Miyagi and Fukushima Prefectures compared with other prefectures. Rescue operations were undertaken on a national scale. This experience of a great disaster hitting multiple numbers of prefectures is unprecedented in Japanese history and a number of problems therefore emerged. In the near future, major earthquake with epicenters in the Tokai, Tonankai, and Nankai regions are predicted to occur. The focal region of the Great East Japan Earthquake is

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16

Agnew, Duncan Carr. "Celebrity Earthquakes." Seismological Research Letters 92, no. 1 (2020): 599–602. http://dx.doi.org/10.1785/0220200329.

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Abstract I discuss how much attention different earthquakes get in the scientific and nonscientific literature. For the former, all earthquakes above magnitude 7.5 appear in a scientific article, and the number of articles tends to increase with magnitude. For the latter, most shocks, even if damaging, become largely forgotten in a few decades, though some, such as the 1906 San Francisco earthquake, live on in popular memory.

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17

OLSEN, KIRA G., and MEREDITH NETTLES. "Patterns in glacial-earthquake activity around Greenland, 2011–13." Journal of Glaciology 63, no. 242 (2017): 1077–89. http://dx.doi.org/10.1017/jog.2017.78.

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ABSTRACTGlacial earthquakes are caused by large iceberg calving events, which are an important mechanism for mass loss from the Greenland ice sheet. The number of glacial earthquakes in Greenland has increased sixfold over the past two decades. We use teleseismic surface waves to analyze the 145 glacial earthquakes that occurred in Greenland from 2011 through 2013, and successfully determine source parameters for 139 events at 13 marine-terminating glaciers. Our analysis increases the number of events in the glacial-earthquake catalog by nearly 50% and extends it to 21 years. The period 2011–1

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18

Kertanah, Kertanah, Irwan Rahadi, Baiq Aryani Novianti, et al. "APPLYING K-MEANS ALGORITHM FOR CLUSTERING ANALYSIS EARTHQUAKES DATA IN WEST NUSA TENGGARA PROVINCE." Indonesian Physical Review 5, no. 3 (2022): 197–207. http://dx.doi.org/10.29303/ipr.v5i3.148.

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This study aims to cluster and visualize the earthquake data on a geographical map to determine earthquakes' characteristics using the k-means algorithm. Cluster analysis using the k-means algorithm was carried out on the earthquake data. K-means algorithm is familiar and is one of the well-known techniques to have been applied in cluster analysis. One of Its advantages in cluster analysis is scaling large datasets, for example, earthquake data. The data used in this study is earthquake data in the West Nusa Tenggara from 1991 to 2021. Applying the proposed k-means algorithm, the optimal numbe

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19

Etirmishli, G. D., R. R. Abdullaeva, S. S. Ismailova, and S. E. Kazimova. "SEISMICITY of AZERBAIJAN and ADJACENT TERRITORIES in 2018–2019." Earthquakes in Northern Eurasia, no. 26 (December 14, 2023): 56–66. http://dx.doi.org/10.35540/1818-6254.2023.26.04.

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In 2018–2019, the Azerbaijan network of seismic stations continued to operate without changes and consisted of 35 digital stations. To estimate the magnitude of earthquakes in these years, only the local magnitude ML Azr was determined. The total number of earthquakes recorded by the Azerbaijan network of stations was 5387 in 2018 and 6880 in 2019, however, the catalog of earthquakes in Azerbaijan and adjacent territories, published in the appendix to this article, provides data on earthquakes only with a magnitude of ML Azr3.0, which ОБЗОР СЕЙСМИЧНОСТИ 66 number was 101 in 2018 and 115 in 20

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20

Pulinets, Sergey, and Galina Khachikyan. "The Global Electric Circuit and Global Seismicity." Geosciences 11, no. 12 (2021): 491. http://dx.doi.org/10.3390/geosciences11120491.

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Basing on the catalogue of earthquakes with a magnitude of M ≥ 4.5 for the period 1973–2017, a UT variation with an amplitude of ~10% in the number of earthquakes is revealed and compared with a UT variation in the ionospheric potential (IP) with an amplitude of ~18%. We demonstrate that the amplitude of the UT variation in the number of deep-focus earthquakes is greater compared with that of crustal earthquakes, reaching 19%. The UT of the primary maxima of both the IP (according to modern calculations) and of earthquake incidence coincides (near 17:00 UT) and is, by 2 h, ahead of the classic

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21

Okamoto, Hideo, Toyoji Saito, Atsuhiro Utsunomiya, Yukio Okada, and Anna Matsukawa. "The Effect of the Kumamoto Earthquakes on the Increase of Burglaries." Journal of Disaster Research 18, no. 5 (2023): 524–30. http://dx.doi.org/10.20965/jdr.2023.p0524.

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Although the overall crime rate of an area decreases after a major disaster, the occurrence of some types of crime may increase. This may be explained by the routine activity theory, which suggests that the absence of a capable guardian and other factors induce occurrence of crime, such as when houses become temporarily unoccupied due to the evacuation of disaster victims and absence of competent guards. This study used interference analysis to investigate whether the aftermath of the 2016 Kumamoto earthquakes in Kumamoto Prefecture, Japan, temporarily increased the number of burglaries in the

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22

Jiang, C. S., and Z. L. Wu. "PI forecast with or without de-clustering: an experiment for the Sichuan-Yunnan region." Natural Hazards and Earth System Sciences 11, no. 3 (2011): 697–706. http://dx.doi.org/10.5194/nhess-11-697-2011.

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Abstract. Pattern Informatics (PI) algorithm uses earthquake catalogues for estimating the increase of the probability of strong earthquakes. The main measure in the algorithm is the number of earthquakes above a threshold magnitude. Since aftershocks occupy a significant proportion of the total number of earthquakes, whether de-clustering affects the performance of the forecast is one of the concerns in the application of this algorithm. This problem is of special interest after a great earthquake, when aftershocks become predominant in regional seismic activity. To investigate this problem,

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Malovichko, A., N. Petrova, I. Gabsatarova, et al. "SEISMICITY of NORTHERN EURASIA in 2015." Earthquakes in Northern Eurasia, no. 24 (December 14, 2021): 10–30. http://dx.doi.org/10.35540/1818-6254.2021.24.01.

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The review of the Northern Eurasia seismicity for 2015 includes a description of seismic networks, the results of analysis of the seismic regime and individual noticeable earthquakes in 16 regions of Russia and neighbouring countries. Seismic monitoring was carried out by the networks of seismic station of Russia, Azerbaijan, Armenia, Belarus, Kazakhstan, Kyrgyzstan, Latvia, Moldova, Turkmenistan, Tajikistan, Uzbekistan, Ukraine, including 599 digital, 7 analogue stations and eight seismic groups. In 2015, these networks registered about 27 thousand tectonic earthquakes, over 6 thousand volcan

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Purba, Siti M., Yaumil F. Alyssa, Mustika Nadia, Nadiatul Asra, and Umar Muksin. "The Influence of Seismometer Coverage on the Earthquake Focal Mechanism Solution (Case Study: Toba Swarm Earthquake)." IOP Conference Series: Earth and Environmental Science 1479, no. 1 (2025): 012014. https://doi.org/10.1088/1755-1315/1479/1/012014.

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Abstract The focal mechanism of an earthquake is necessary to describe the plane and characteristics of the fault. In the case of local earthquakes, the focal mechanism is often determined based on the first polarity of the primary wave. Therefore, the quality of the earthquake focal mechanism depends on the station coverage and the number of first polarities of primary waves. This study aims to investigate the variation in solution and quality of earthquake focal mechanisms with different station coverage. We conducted experiments on Toba swarm earthquake data for the May-June 2021 period wit

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Gileva, N. A., and M. A. Khritova. "Condition and prospects of detailed processing of earthquakes of the Baikal region and Transbaikalia." Russian Journal of Seismology 5, no. 2 (2023): 77–99. http://dx.doi.org/10.35540/2686-7907.2023.2.06.

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Throughout the history of the Baikal seismic network (since 1901), great efforts have been made to preserve the most detailed information about recorded seismic events. The article considers a method for detailed summary processing of earthquakes in the Baikal and Transbaikalia regions used in the BB GS RAS. The level and quality of regional processing are shown on the example of 2019. 7273 earthquakes were registered during the year, most of them are (62%) weak earthquakes (KР=6), for which the error of determining the coordinates of the epicenters was on average less than 5 km. Localization

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Pődor, Andrea, and Marta Kiszely. "EXPERIMENTAL INVESTIGATION OF VISUALI ZATION METHODS OF EARTH QUAKE CATALOGUE MAPS." Geodesy and cartography 40, no. 4 (2014): 156–62. http://dx.doi.org/10.3846/20296991.2014.987451.

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The aim of the study is to find possible solutions to represent earthquake catalogue data and design maps which can help non-professionals to identify those places where earthquakes occurred frequently. The goal is to visualize all available catalogue data sets in a complex way on a single map, displaying the long-term recurrence times of earthquakes. Therefore, raw data and aggregated data were combined with different cartographic visualization techniques to test the applicability of earthquake maps. Preliminary research demonstrates that aggregation can improve the process of retrieving info

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Hough, Susan E., and Stacey S. Martin. "Which Earthquake Accounts Matter?" Seismological Research Letters 92, no. 2A (2021): 1069–84. http://dx.doi.org/10.1785/0220200366.

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Abstract Earthquake observations contributed by human observers provide an invaluable source of information to investigate both historical and modern earthquakes. Commonly, the observers whose eyewitness accounts are available to scientists are a self-selected minority of those who experience a given earthquake. As such these may not be representative of the overall population that experienced shaking from the event. Eyewitness accounts can contribute to modern science only if they are recorded in the first place and archived in an accessible repository. In this study, we explore the extent to

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Okawa, Izuru, Toshihide Kashima, Shin Koyama, and Masanori Iiba. "Recorded Responses of Building Structures during the 2011 Tohoku-Oki Earthquake with Some Implications for Design Practice." Earthquake Spectra 29, no. 1_suppl (2013): 245–64. http://dx.doi.org/10.1193/1.4000130.

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During the 2011 Tohoku-oki earthquake, a large number of response records from various types of buildings were obtained. The records give us the actual motions of buildings during the exceptionally large earthquakes that are considered comparable with design earthquakes. Various types of earthquake response records have been collected, and their properties with several buildings that will exhibit implications for structural design are discussed.

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Allen, Trevor I. "A pragmatic approach to adjusting early instrumental local magnitudes for seismic hazard assessments in Australia." Journal of Seismology 25, no. 3 (2021): 899–920. http://dx.doi.org/10.1007/s10950-021-10004-5.

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AbstractPrior to the development of Australian-specific magnitude formulae, the 1935 magnitude correction factors by Charles Richter—originally developed for southern California—were almost exclusively used to calculate earthquake magnitudes throughout Australia prior to the 1990s. Due to the difference in ground-motion attenuation between southern California and much of the Australian continent, many earthquake magnitudes from the early instrumental era are likely to have been overestimated in the Australian earthquake catalogue. A method is developed that adjusts local magnitudes (ML) using

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Lule, Arjol, and Dhurata Ndreko. "Some Features of Seismicity in Leskovik-Korca-Oher Fault Zone During this Century." European Journal of Formal Sciences and Engineering 7, no. 2 (2025): 1–11. https://doi.org/10.26417/0jm7pc94.

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During this century, the Leskoviku-Korca-Oher fault zone seismicity is dominated by 7 moderate earthquakes with magnitude ML ranging 4.5 – 5.3. The database of this study composed of 2858 seismic events with ML >0.5 is characterized by tectonic earthquakes with b-value 0.76. Most of the earthquakes have magnitude ranging between 1.8 and 3.3. The cumulative number of earthquakes during two decades trends to increase. Furthermore, on the Leskoviku-Korca-Oher territory there are approximately 1392 earthquakes with magnitude ML ≥2.0, about 355 earthquakes ML ≥3.0 with average depth 11km, about

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Ostřihanský, L. "Causes of earthquakes and lithospheric plates movement." Solid Earth Discussions 4, no. 2 (2012): 1411–83. http://dx.doi.org/10.5194/sed-4-1411-2012.

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Abstract. The goal of the paper was to verify triggering of earthquakes by the length of day variations, i.e. the sidereal 13.66 days Earth's rotation variations, in contrast with tidal biweekly 14.76 days variations (full and new Moon), which for hundred years of investigation give negative results. Earthquake triggering governed by sidereal variations caused by variable Moon's declination accelerates and decelerates the Earth's rotation. Profound Schuster's test proved that earthquakes are triggered both in Earth's deceleration and acceleration. For this investigation the most prominent eart

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Ross, Zachary E., Daniel T. Trugman, Egill Hauksson, and Peter M. Shearer. "Searching for hidden earthquakes in Southern California." Science 364, no. 6442 (2019): 767–71. http://dx.doi.org/10.1126/science.aaw6888.

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Earthquakes follow a well-known power-law size relation, with smaller events occurring much more often than larger events. Earthquake catalogs are thus dominated by small earthquakes yet are still missing a much larger number of even smaller events because of signal fidelity issues. To overcome these limitations, we applied a template-matching detection technique to the entire waveform archive of the regional seismic network in Southern California. This effort resulted in a catalog with 1.81 million earthquakes, a 10-fold increase, which provides important insights into the geometry of fault z

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Lee, En-Jui, Wu-Yu Liao, Dawei Mu, Wei Wang, and Po Chen. "GPU-Accelerated Automatic Microseismic Monitoring Algorithm (GAMMA) and Its Application to the 2019 Ridgecrest Earthquake Sequence." Seismological Research Letters 91, no. 4 (2020): 2062–74. http://dx.doi.org/10.1785/0220190323.

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Abstract Foreshocks and/or aftershocks play critical roles in improving our understanding of the processes of faulting, such as nucleation of earthquakes, earthquake triggering, and postseismic deformation. A rapid and accurate earthquake detection and location algorithm can provide timely information of seismic activities, thereby benefitting our understanding of physical mechanisms of faulting and seismic hazard assessment. We have developed a graphic processing unit (GPU)-accelerated automatic microseismic monitoring algorithm (GAMMA) for accurate and near real-time detection and location o

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Zhang, Yihe. "Causes and recommendations for post-disaster reconstruction earthquake in Turkey." Applied and Computational Engineering 9, no. 1 (2023): 210–15. http://dx.doi.org/10.54254/2755-2721/9/20230091.

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Earthquake, also known as ground motion and ground vibration, is a natural phenomenon caused by the rapid release of energy from the earth's crust, during which seismic waves are generated. The current level of science and technology cannot predict the arrival of earthquakes, and earthquakes will be unpredictable for a long time in the future. The so-called examples of successful earthquake prediction are basically coincidences. For earthquakes, what we should do is to improve the seismic level of buildings and do a good job of defence, rather than predicting earthquakes. Turkey experienced a

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Santo, Saif Ahmed, and Akhi Sultana Fariha. "A Comprehensive Case Study on the Historical Earthquakes in Major Fault Zones of Bangladesh." Journal of Studies in Science and Engineering 3, no. 1 (2023): 30–53. http://dx.doi.org/10.53898/josse2023313.

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An earthquake is a fatal natural disaster that occurs suddenly without any prior signal. Every year the world faces many earthquakes with magnitudes varying from low to high. The uncertain nature of earthquakes makes it almost impossible to predict the exact time of occurrence. So, it is necessary to take precautionary steps before an earthquake hits. To take preventive measures, a proper study of tectonic plates and faults must be done to gain insight into the study area's susceptibility. Due to the geological characteristics and tec-tonic plate activity, Bangladesh risks facing an Earthquake

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Bilham, Roger. "The 1737 Calcutta earthquake and cyclone evaluated." Bulletin of the Seismological Society of America 84, no. 5 (1994): 1650–57. http://dx.doi.org/10.1785/bssa0840051650.

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Abstract Catalogs of historically devastating earthquakes (e.g., Dunbar et al., 1992) contain an entry for an earthquake in Calcutta in 1737 that is held responsible for the loss of 300,000 lives, thus rendering it one of the three most disastrous earthquakes in history. Yet, evidence for a severe earthquake is weak, consisting of anonymous reports conveyed to Europe 6 months later by merchant ships returning from Bengal. Official accounts of the disaster submitted to the East India Company headquarters in London list 3000 fatalities and omit mention of an earthquake. If the 11 October 1737 Ca

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Turova, AP, and ER Morozova. "The contribution of the seismic station “Severnaya Zemlya” to the study of arctic seismicity." Arctic Environmental Research 19, no. 4 (2019): 139–45. http://dx.doi.org/10.3897/issn2541-8416.2019.19.4.139.

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At present, a relevant task consists in understanding the seismicity of the European Arctic sector in general and the Barents-Kara region in particular. Due to the small number of seismic stations installed in the Arctic region our understanding of the seismicity of the Arctic is still not properly investigated. However, as a consequence of the operationalisation of the seismic station SVZ Severnaya Zemlya on the Severnaya Zemlya archipelago since 2016, it has become possible to record and process an increased number of seismic events. Data from the Arkhangelsk seismic network were compared wi

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Turova, AP, and ER Morozova. "The contribution of the seismic station "Severnaya Zemlya" to the study of arctic seismicity." Arctic Environmental Research 19, no. (4) (2019): 139–45. https://doi.org/10.3897/issn2541-8416.2019.19.4.139.

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At present, a relevant task consists in understanding the seismicity of the European Arctic sector in general and the Barents-Kara region in particular. Due to the small number of seismic stations installed in the Arctic region our understanding of the seismicity of the Arctic is still not properly investigated. However, as a consequence of the operationalisation of the seismic station SVZ Severnaya Zemlya on the Severnaya Zemlya archipelago since 2016, it has become possible to record and process an increased number of seismic events. Data from the Arkhangelsk seismic network were compared wi

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Etirmishli, G. D., R. R. Abdullaeva, S. S. Ismailova, and S. E. Kazimova. "SEISMICITY of AZERBAIJAN and ADJACENT TERRITORIES in 2016–2017." Earthquakes in Northern Eurasia, no. 25 (December 20, 2022): 56–65. http://dx.doi.org/10.35540/1818-6254.2022.25.04.

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In 2016–2017, the network of Azerbaijan seismic stations included 35 digital stations, which continued to operate unchanged. The set of parameters determined for assessing the earthquake magnitude was the same as in 2015. The local magnitude MLАзр was determined only. The total number of earthquakes recorded by the Azerbaijan network of stations amounted to 6044 in 2016 and 6094 in 2017. However, only 128 of them with MLAzr3.0 are given in the catalogue of earthquakes of Azerbaijan published in the Electronic supplement to this article. Seismic activity in the study area remained unchanged. T

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Ozer, N. "New information on earthquake history of the Aksehir-Afyon Graben System, Turkey, since the second half of 18th century." Natural Hazards and Earth System Sciences 6, no. 6 (2006): 1017–23. http://dx.doi.org/10.5194/nhess-6-1017-2006.

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Abstract. Researches aimed at enriching the number of available documentary sources on earthquakes have an important role in seismology. To this end, this paper documents the history of prominent earthquakes associated with the NW-SE trending Sultandag-Aksehir Fault and Aksehir-Afyon graben system in Western-Central Anatolia since the historical times through 1766. This work also combines the earthquake data for both historical and instrumental periods, previously listed in various catalogues and resources, for the studied area. Documents from the Ottoman archives and libraries as well as the

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Kondo Lembang, Ferry, Lexy Janzen Sinay, and Asrul Irfanullah. "ARFIMA Modelling for Tectonic Earthquakes in The Maluku Region." Indonesian Journal of Statistics and Its Applications 5, no. 1 (2021): 39–49. http://dx.doi.org/10.29244/ijsa.v5i1p39-49.

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Maluku Province is one of the regions in Indonesia with a very active and very prone earthquake intensity because it is a meeting place for 3 (three) plates, namely the Eurasian, Pacific and Australian plates. In the last 100 years, the history of tectonic earthquakes with tsunamis that occurred in Indonesia was 25-30% occurring in the Maluku Sea and Banda Sea. Based on this fact, this study aims to analyze the incidence of tectonic earthquakes that occurred in the Maluku region and its surroundings using the Autoregressive Fractionally Integrated Moving Averages (ARFIMA) model which has the a

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Kachakhidze, M., N. Kachakhidze, R. Kiladze, V. Kukhianidze, and G. Ramishvili. "Relatively small earthquakes of Javakheti Highland as the precursors of large earthquakes occuring in the Caucasus." Natural Hazards and Earth System Sciences 3, no. 3/4 (2003): 165–70. http://dx.doi.org/10.5194/nhess-3-165-2003.

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Abstract. Javakheti Highland is one of the most seismic active regions of the Caucasus. The majority of earthquakes observed throughout the region occur within this small area (f = 40.8° – 41.8° ; l = 43.3° – 44.3°). One can expect that exclusive seismic activity of Javakheti Highland testifies to global geophysical processes which take place throughout the Caucasus region. Based on the above-mentioned, of interest was to study variation with time of the number of earthquakes occurring in Javakheti region. We analysed some 695 relatively small earthquakes (2.5 < M < 6.0) observed in Java

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Hays, Walter W. "The 19 September 1985 Mexico Earthquake: Technical Problems." Prehospital and Disaster Medicine 2, no. 1-4 (1986): 9–14. http://dx.doi.org/10.1017/s1049023x00030259.

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ABSTRACTThe September 19, 1985, Mexico earthquake reminded scientists and engineers of the importance of considering soil amplification effects in earthquake-resistant design. The Mexico earthquake illustrated the “worst case”—the ground response and the building response occurring at approximately the same period, 2 seconds. This resonance phenomenon was predictable on the basis of similar experiences in past earthquakes. A number of areas in the United States also exhibit significant predictable soil amplification effects. Special steps are needed in these areas to mitigate the potential dam

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Hart, MD, Alexander, Álvaro Mardones Rodríguez, MD, José Retamal Carvajal, MD, and Gregory R. Ciottone, MD. "Earthquake response in Chile: A case study in health emergency and disaster risk management." American Journal of Disaster Medicine 16, no. 4 (2021): 313–18. http://dx.doi.org/10.5055/ajdm.2021.0413.

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Chile is one of the most seismically active nations in the world. Due to the frequency of earthquakes, the Chilean government has invested heavily in several earthquake mitigation strategies and is able to boast impressively low numbers of deaths after relatively strong earthquakes. These include earthquake-centered building codes, which help prevent collapses, early detection technologies, early warning systems, public awareness campaigns, and unified command of responding agencies. Disaster risk management is a field in need of more evidence-based recommendations, and taking cues from succes

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Sycheva, N. А. "SEISMICITY AND CRUSTAL SEISMOTECTONIC DEFORMATIONS OF THE ANATOLIAN PLATE (TURKEY)." Geodynamics & Tectonophysics 15, no. 1 (2024): 0743. http://dx.doi.org/10.5800/gt-2024-15-1-0743.

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The paper deals with the study of seismicity and the crustal stress-strain state of Turkey whose tectonics is caused by relative movements of the African, Aegean, Arabian, Anatolian, Black Sea and Eurasian plates. Seismotectonic deformations (STD) were calculated using the approaches proposed by Yu.V. Riznichenko and S.L. Yunga. The distribution of seismicity, average annual STD rate (STD intensity), seismogenic rupture concentration parameter and the Tsallis parameter was plotted from the earthquake catalog data analysis (more than 300000 events for 1900–2022). The representative part include

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Khalisa, Cut Lutfia, Halida Yunita, and Munira Sungkar. "Analysis of the Value of Maximum Ground Acceleration in Earthquake Disaster Mitigation Efforts on the Lan." E3S Web of Conferences 476 (2024): 01021. http://dx.doi.org/10.1051/e3sconf/202447601021.

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The Aceh region itself has a location that is within the scope of the Sumatran fault, areas on active faults can experience a high possibility of earthquakes. Earthquake epicenters on the mainland can occur due to shifts in the Sumatran fault which is indicated by the number of earthquakes along the fault and generally has shallow depths. The research was conducted to determine the value of the earthquake acceleration on the ground around the East Aceh Alue Genteng bridge. The results of this study found that the magnitude of the earthquake can affect the level of acceleration of the earthquak

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Li, M., and M. Parrot. ""Real time analysis" of the ion density measured by the satellite DEMETER in relation with the seismic activity." Natural Hazards and Earth System Sciences 12, no. 9 (2012): 2957–63. http://dx.doi.org/10.5194/nhess-12-2957-2012.

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Abstract. This paper is related to the study of the ion density recorded by the low altitude satellite DEMETER. In a first time there is an automatic search for ionospheric perturbations in the complete satellite data set of ion densities. Then perturbations due to known ionospheric phenomena (for example, solar activity) are eliminated as well as perturbations not above a seismic zone. In a second time, there is a search to know if each selected perturbation corresponds to a future earthquake. The earthquakes have been classified depending on their magnitude and depth. This attempt to predict

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Pokharel, Yagya Raj. "Knowledge and Preparedness of Earthquake among Management Graduates in Kathmandu District of Nepal." Nepal Journal of Multidisciplinary Research 5, no. 4 (2022): 116–27. http://dx.doi.org/10.3126/njmr.v5i4.49925.

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Introduction: Earthquakes are one of the most deadly and unexpected natural disasters, resulting in thousands of lives and huge economic loss. Nepal is a country that experiences earthquakes on a regular basis. Previous study has shown that increasing public awareness and preparedness for future earthquakes is crucial for minimizing the number of deaths caused and property loss. To reduce the damage caused by such earthquakes, it is vital to analyze people's understanding and readiness. Purpose: The main aim of the study is to identify the Knowledge and Preparedness of Earthquake and the

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Etirmishli, G., R. Abdullaeva, S. Ismailova, and S. Kazimova. "SEISMICITY of AZERBAIJAN and ADJACENT TERRITORIES in 2015." Earthquakes in Northern Eurasia, no. 24 (December 14, 2021): 50–59. http://dx.doi.org/10.35540/1818-6254.2021.24.04.

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In 2015, the network of Azerbaijan seismic stations included 35 digital stations, which continued to operate unchanged. The set of parameters determined for estimating the earthquake magnitude has decreased – determination of the MPVA magnitude and КР energy class has ceased. Only the local magnitude MLАзр was measured. The total number of earthquakes recorded by the Azerbaijan network of stations in 2015 amounted to 6419, however, only 128 of them with MLАзр3.0 are given in the catalogue of earthquakes of Azerbaijan published in the Appendix to this article. Seismic activity in the study are

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Hao, Jinlai, Jinhai Zhang, and Zhenxing Yao. "Evidence for diurnal periodicity of earthquakes from midnight to daybreak." National Science Review 6, no. 5 (2018): 1016–23. http://dx.doi.org/10.1093/nsr/nwy117.

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Abstract Previously, inadequate earthquake catalogs and the lack of method made it challenging, if not impossible, to determine the dominant period of earthquake occurrence. With the advent of densely distributed seismic stations in Japan since 2002, 410 642 M1.0+ earthquakes have been cataloged under the mainland within 30-km depth, which provide a superb dataset to identify the periodicity of earthquakes. We processed this catalog using time-frequency analyses and daily stacking, which are powerful in extracting weak periodical signal from strong random noises. We concentrated on the time se

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