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Journal articles on the topic 'Origin of seismicity'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Lukk, A. A., V. G. Leonova, and A. Ya Sidorin. "Revisiting the Origin of Seismicity in Fennoscandia." Izvestiya, Atmospheric and Oceanic Physics 55, no. 7 (2019): 743–58. http://dx.doi.org/10.1134/s000143381907003x.

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Vasudevan, K., D. W. Eaton, and J. Davidsen. "Intraplate seismicity in Canada: a graph theoretic approach to data analysis and interpretation." Nonlinear Processes in Geophysics 17, no. 5 (2010): 513–27. http://dx.doi.org/10.5194/npg-17-513-2010.

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Abstract. Intraplate seismicity occurs in central and northern Canada, but the underlying origin and dynamics remain poorly understood. Here, we apply a graph theoretic approach to characterize the statistical structure of spatiotemporal clustering exhibited by intraplate seismicity, a direct consequence of the underlying nonlinear dynamics. Using a recently proposed definition of "recurrences" based on record breaking processes (Davidsen et al., 2006, 2008), we have constructed directed graphs using catalogue data for three selected regions (Region 1: 45°−48° N/74°−80° W; Region 2: 51°−55° N/

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3

Goltz, C. "Decomposing spatio-temporal seismicity patterns." Natural Hazards and Earth System Sciences 1, no. 1/2 (2001): 83–92. http://dx.doi.org/10.5194/nhess-1-83-2001.

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Abstract. Seismicity is a distributed process of great spatial and temporal variability and complexity. Efforts to characterise and describe the evolution of seismicity patterns have a long history. Today, the detection of changes in the spatial distribution of seismicity is still regarded as one of the most important approaches in monitoring and understanding seismicity. The problem of how to best describe these spatio-temporal changes remains, also in view of the detection of possible precursors for large earthquakes. In particular, it is difficult to separate the superimposed effects of dif

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Goertz-Allmann, Bettina P., and Stefan Wiemer. "Geomechanical modeling of induced seismicity source parameters and implications for seismic hazard assessment." GEOPHYSICS 78, no. 1 (2013): KS25—KS39. http://dx.doi.org/10.1190/geo2012-0102.1.

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We simulate induced seismicity within a geothermal reservoir using pressure-driven stress changes and seismicity triggering based on Coulomb friction. The result is a forward-modeled seismicity cloud with origin time, stress drop, and magnitude assigned to each individual event. Our model includes a realistic representation of repeating event clusters, and is able to explain in principle the observation of reduced stress drop and increased [Formula: see text]-values near the injection point where pore-pressure perturbations are highest. The higher the pore-pressure perturbation, the less criti

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Khutorskoy, Mikhail, Emil Botev, Valentina Protopopova, Aleksey Benderev, and Elena Tevelova. "Heat Flow and Seismicity in Bulgaria." Engineering Geology and Hydrogeology 34, no. 1 (2020): 53–65. http://dx.doi.org/10.52321/igh.34.1.53.

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The study of intra-earth processes requires a comprehensive approach, which should be based on the understanding different nature and origin depth of terrestrial processes. In this regard, the problem of the relationship between seismicity and heat flow in the lithosphere is of interest. We analyzed seismic observation data in Bulgaria from 1981 to 2018 using statistical methods. A significant correlation was found between the heat flow and the earthquakes magnitude, as well as between the thickness of thermal lithosphere and the magnitude. To assess the released friction heat and hydrodynamic

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Ellsworth, William L., Andrea L. Llenos, Arthur F. McGarr, et al. "Increasing seismicity in the U. S. midcontinent: Implications for earthquake hazard." Leading Edge 34, no. 6 (2015): 618–26. https://doi.org/10.1190/tle34060618.1.

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Earthquake activity in parts of the central United States has increased dramatically in recent years. The space-time distribution of the increased seismicity, as well as numerous published case studies, indicates that the increase is of anthropogenic origin, principally driven by injection of wastewater coproduced with oil and gas from tight formations. Enhanced oil recovery and long-term production also contribute to seismicity at a few locations. Preliminary hazard models indicate that areas experiencing the highest rate of earthquakes in 2014 have a short-term (one-year) hazard comparable t

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Candela, Thibault, Maarten Pluymaekers, Jean-Paul Ampuero, et al. "Controls on the spatio-temporal patterns of induced seismicity in Groningen constrained by physics-based modelling with Ensemble-Smoother data assimilation." Geophysical Journal International 229, no. 2 (2021): 1282–308. http://dx.doi.org/10.1093/gji/ggab497.

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SUMMARY The induced seismicity in the Groningen gas field, The Netherlands, presents contrasted spatio-temporal patterns between the central area and the south west area. Understanding the origin of this contrast requires a thorough assessment of two factors: (1) the stress development on the Groningen faults and (2) the frictional response of the faults to induced stresses. Both factors have large uncertainties that must be honoured and then reduced with the observational constraints. Ensembles of induced stress realizations are built by varying the Poisson's ratio in a poro-elastic model inc

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8

Paudyal, Harihar. "Fluctuation of seismic activity associated with 1999 Chamoli earthquake." Himalayan Physics 2 (July 31, 2011): 11–15. http://dx.doi.org/10.3126/hj.v2i2.5203.

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The Chamoli earthquake of March 28, 1999 (Mb 6.6, Origin time: 19:05:12, epicenter at 30.5° N 79.4° E and Focal depth 23 km) occurred in the Himalayan front arc which caused severe damage in the region. Anomalous seismic activity associated with this recent devastating earthquake in the Central Himalaya region in an area bounded by 30.0°-31.0° N and 79.0°-80.0° E have been studied using seismicity data from 1980-2000. The preparatory zone is delineated using the temporal and the spatial distribution of earthquakes, considering the events with cutoff magnitude mb ≥ 4.3. Daily number of events a

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Valenzuela-Malebrán, Carla, Simone Cesca, Sergio Ruiz, et al. "Seismicity clusters in Central Chile: investigating the role of repeating earthquakes and swarms in a subduction region." Geophysical Journal International 224, no. 3 (2020): 2028–43. http://dx.doi.org/10.1093/gji/ggaa562.

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SUMMARY Seismicity along subduction interfaces is usually dominated by large main-shock–aftershock sequences indicative of a continuum distribution of highly coupled large asperities. In the past decades, however, the increased resolution of seismic catalogues at some subduction zone seems to indicate instead a more complex rheological segmentation of the interface. Large and megathrust earthquake ruptures seem interspersed among regions of low seismic coupling and less stress buildup. In this weaker zone, the strain is primarily released via a combination of moderate-size swarm-like seismicit

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Shestopalov, I. P., and E. P. Kharin. "Relationship between solar activity and global seismicity and neutrons of terrestrial origin." Russian Journal of Earth Sciences 14, no. 1 (2014): 1–10. http://dx.doi.org/10.2205/2014es000536.

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11

De Barros, Louis, Ivan Lokmer, and Christopher J. Bean. "Origin of spurious single forces in the source mechanism of volcanic seismicity." Journal of Volcanology and Geothermal Research 262 (July 2013): 1–6. http://dx.doi.org/10.1016/j.jvolgeores.2013.06.006.

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12

Chouet, Bernard A., and Phillip B. Dawson. "Origin of the pulse-like signature of shallow long-period volcano seismicity." Journal of Geophysical Research: Solid Earth 121, no. 8 (2016): 5931–41. http://dx.doi.org/10.1002/2016jb013152.

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13

Bernal, I., and H. Tavera. "Seismic Velocity Structure in the Area of the 2007, Mw 8.0, Pisco-Peru Earthquake: Implications for the Mechanics of Subduction in the Vicinity of the Nazca Ridge." International Journal of Geophysics 2020 (November 5, 2020): 1–8. http://dx.doi.org/10.1155/2020/3874524.

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In this study, we present a velocity model for the area of the 2007 Pisco-Peru earthquake ( Mw = 8.0 ) obtained using a double-difference tomography algorithm that considers aftershocks acquired for 6 months. The studied area is particularly interesting because it lies on the northern edge of the Nazca Ridge, in which the subduction of a large bathymetric structure is the origin of geomorphological features of the central coast of Peru. Relocated seismicity is used to infer the geometry of the subduction slab on the northern flank of the Nazca Ridge. The results prove that the geometry is cont

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Baskoutas, Ioannis, George Popandopoulos, and Prasanta Chingtham. "Temporal variation of seismic parameters in the western part of the India-Eurasia plate collision zone." Research in Geophysics 1, no. 1 (2011): 3. http://dx.doi.org/10.4081/rg.2011.e3.

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We examined the temporal seismicity variation in the north-west Himalayas and the adjacent regions in relation to strong earthquake occurrences in the period 1970-2010. The aim was to promote seismic hazard assessment and to show the possibilities of strong earthquake forecasting by means of the FastBEE computer tool. The temporal variation of the seismicity is expressed in terms of three basic seismic parameters: the logarithm of the number of earthquakes logN, the seismic energy released in the mode logE2/3 and the b-value of the earthquake magnitude-frequency distribution expressed by the G

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15

Sevilgen, Volkan, Ross S. Stein, and Fred F. Pollitz. "Stress imparted by the great 2004 Sumatra earthquake shut down transforms and activated rifts up to 400 km away in the Andaman Sea." Proceedings of the National Academy of Sciences 109, no. 38 (2012): 15152–56. http://dx.doi.org/10.1073/pnas.1208799109.

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The origin and prevalence of triggered seismicity and remote aftershocks are under debate. As a result, they have been excluded from probabilistic seismic hazard assessment and aftershock hazard notices. The 2004 M = 9.2 Sumatra earthquake altered seismicity in the Andaman backarc rift-transform system. Here we show that over a 300-km-long largely transform section of the backarc, M≥4.5 earthquakes stopped for five years, and over a 750-km-long backarc section, the rate of transform events dropped by two-thirds, while the rate of rift events increased eightfold. We compute the propagating dyna

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16

Heliani, Leni Sophia, Cecep Pratama, Parseno Parseno, Nurrohmat Widjajanti, and Dwi Lestari. "GPS-DERIVED SECULAR VELOCITY FIELD AROUND SANGIHE ISLAND AND ITS IMPLICATION TO THE MOLUCCA SEA SEISMICITY." GEOMATIKA 26, no. 2 (2020): 107. http://dx.doi.org/10.24895/jig.2020.26-2.1199.

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<p><em>Sangihe-Moluccas region is the most active seismicity in Indonesia. Between 2015 to 2018 there is four M6 class earthquake occurred close to the Sangihe-Moluccas region. These seismic active regions representing active deformation which is recorded on installed GPS for both campaign and continuous station. However, the origin of those frequent earthquakes has not been well understood especially related to GPS-derived secular motion. Therefore, we intend to estimate the secular motion inside and around Sangihe island. On the other hand, we also evaluate the effect of seismici

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17

Cox, R. T., and R. B. Van Arsdale. "Hotspot origin of the Mississippi embayment and its possible impact on contemporary seismicity." Engineering Geology 46, no. 3-4 (1997): 201–16. http://dx.doi.org/10.1016/s0013-7952(97)00003-3.

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18

Pihulevskyi, P. H., O. V. Kendzera, K. V. Babii, L. B. Anisimova, and O. S. Kyryliuk. "Connection of Kryvbas tectonics with natural and technogenic seismicity." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 2 (April 30, 2023): 5–10. http://dx.doi.org/10.33271/nvngu/2023-2/005.

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Purpose. Studying the tectonic features of the structure of the earth’s crust of Kryvyi Rih-Kremenchuk suture zone to clarify the nature of the origin of seismic events in the Kryvbas. Methodology. To analyze and generalize the data on the Kryvbas seismicity with reference to large-scale geological and tectonic maps of exploration work. To study its tectonic structure based on geological, geophysical studies and drilling of Kryvyi Rih superdeep well. Findings. In the period 2011–2021, about 1,200 seismic events were recorded on the territory of Kryvbas, the majority of which had a minor magnit

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19

Güvercin, Sezim Ezgi, Hayrullah Karabulut, A. Özgün Konca, Uğur Doğan, and Semih Ergintav. "Active seismotectonics of the East Anatolian Fault." Geophysical Journal International 230, no. 1 (2022): 50–69. http://dx.doi.org/10.1093/gji/ggac045.

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SUMMARY The East Anatolian Fault (EAF) is a 700-km-long left-lateral transform fault located between the Anatolian and Arabian plates. The proximity of the Euler Pole to the Arabia–Anatolia Plate boundary leads to rapid changes in plate velocity along the boundary, which is manifested by the decreasing slip rates from east (10 mm yr–1) to west (∼1–4 mm yr–1). The EAF displays heterogeneous seismicity patterns with seismic gaps, localized clusters and broad diffuse zones. In this study, in order to understand the origin of these complexities and quantify the seismic hazard along the EAF, we pre

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20

Fahmi, M. N., A. Realita, H. Risanti, T. Prastowo, and M. Madlazim. "Vulnerability in the Java northen region in association with earthquake sources of tectonic origin." Journal of Physics: Conference Series 2596, no. 1 (2023): 012041. http://dx.doi.org/10.1088/1742-6596/2596/1/012041.

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Abstract While threats from the subduction zone off the Java south coast remain persistent, potential sources of a tectonic earthquake centered in the Java northern areas come into play. Despite their enigmatic presence and a clear shift of the sources from the mainland to the north from hypocentre relocation studies, this poses a danger to the community in the Java northern coastlines, increasing vulnerability to earthquake and tsunami hazards. The main aim of this study is thus to evaluate seismic hazards and corresponding analysis, hence assessing vulnerability with respect to the presence

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21

Azeez, K. K. Abdul, Kapil Mohan, K. Veeraswamy, B. K. Rastogi, Arvind K. Gupta, and T. Harinarayana. "Lithospheric resistivity structure of the 2001 Bhuj earthquake aftershock zone." Geophysical Journal International 224, no. 3 (2020): 1980–2000. http://dx.doi.org/10.1093/gji/ggaa556.

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SUMMARY The Bhuj area, in the Kutch region of western India, is a unique intraplate seismic zone in the world where aftershock activity associated with a large magnitude earthquake (7.7 Mw Bhuj earthquake on 26 January 2001) has persisted over a decade and up till today. We studied the lithospheric resistivity structure of the Bhuj earthquake aftershock zone to gain more insight into the structure and processes influencing the generation of intraplate seismicity in broad and, in particular, to detect the deep origin and upward migration channels of fluids linked to the crustal seismicity in th

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22

Jansen, Jan-Dirk, and Rien Herber. "Research into induced seismicity in the Groningen field – further studies." Netherlands Journal of Geosciences 96, no. 5 (2017): s279—s284. http://dx.doi.org/10.1017/njg.2017.21.

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AbstractFurther research into seismicity caused by natural gas production from the Groningen field is necessary to improve the assessment of seismic risk and develop means to control and reduce it. Research into subsurface aspects is primarily of relevance to assess the seismic hazard component in the cause-and-effect chain that governs the seismic risk. It requires a wide range of research activities that can be broadly classified as follows: •Increasing understanding of the physical mechanisms that govern production-induced seismicity, in particular source mechanisms, compaction behaviour, p

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23

Gailler, Lydie, Clément Grace, Guillaume Boudoire, et al. "Scientific response to the 2021–2022 seismic swarm in the Monts Dore volcanic province (France): structural insights from punctual surveys (1/2)." Comptes Rendus. Géoscience 357, G1 (2025): 61–78. https://doi.org/10.5802/crgeos.284.

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Long-dormant volcanic provinces remain excellent proxies in studying active edifices. The Monts Dore volcanic province (French Massif Central) has been recently the site of a unique seismic episode. Geophysical surveys were conducted at different horizontal and vertical spatial scales. Magnetic anomalies highlight mechanical heterogeneities consistent with the regional tectonic context. Low-conductive structures imaged suggest the presence of fluid rising along main paths at various depths. Although we cannot strictly exclude a purely tectonic explanation, our data seem to support the origin o

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SHUKLA, H. P., R. S. DATTATRAYAM, and A. K. BHATNAGAR. "Seismicity of region around dams in North West India." MAUSAM 63, no. 2 (2021): 261–74. http://dx.doi.org/10.54302/mausam.v63i2.1399.

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The collision of Indian and Eurasian continents caused large scale deformation and high seismicityof vast areas of both continents in the geological history. The North-West portion of the Himalayan arc which is lyingunder the rupture zones of Kangra earthquake of 1905, Uttarkashi earthquake of 1991 and Chamoli earthquake in 1999,has experienced many earthquakes of magnitude 6 and above. The region of North-West India between 30.0º - 35.0ºNorth and 73.0º - 79.0º East is, therefore, under intense investigations by various scientists since the origin of theHimalayas. India Meteorological Departme

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CAMELBEECK, Thierry, Koen VAN NOTEN, and Thomas LECOCQ. "The 1965–1970 seismic episode in the Hainaut coal basin (Belgium): a key period to analyse the triggered nature of a century-long seismic activity." Geologica Belgica 28, no. 1-2 (2025): 1–23. https://doi.org/10.20341/gb.2025.001.

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Damaging earthquakes happened in the Hainaut coal basin (Belgium) in the 19th and 20th centuries but stopped after coal mining. We relocated 54 Hainaut earthquakes of the period 1965 and 1985 by using regional and local seismic phase measurements from recordings in and around Belgium. These new results finalise the Hainaut earthquake catalogue, derived from macroseismic data for the 1887–1965 period and instrumental records after 1965. This updated database allows us to discuss the origin of this intriguing seismicity. Computed focal depths show that the strongest earthquakes before 1985 occur

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BODRI, B. "A FRACTAL MODEL FOR SEISMICITY AT IZU-TOKAI REGION, CENTRAL JAPAN." Fractals 01, no. 03 (1993): 539–46. http://dx.doi.org/10.1142/s0218348x93000563.

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Fractal approach has been applied to investigate regional seismicity at the Izu peninsula—Tokai area, Central Japan. The frequency-magnitude distribution of earthquakes, distribution of epicenters, origin times of earthquakes, the fracture fault system in the region have been considered, and the fractal dimensions corresponding to them were calculated. A good correspondence in the fractal dimension values was found. The frequency-magnitude distribution in the area shows a fractal dimension of 1.28, whilst D=1.15±0.18 is representative of the geometry of the distribution of earthquake epicenter

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Zhou, Huiling, Xiaocheng Zhou, Hejun Su, et al. "Hydrochemical Characteristics of Earthquake-Related Thermal Springs along the Weixi–Qiaohou Fault, Southeast Tibet Plateau." Water 14, no. 1 (2022): 132. http://dx.doi.org/10.3390/w14010132.

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The Weixi–Qiaohou Fault (WQF) is considered an important zone of the western boundary of the Sichuan–Yunnan block, and its seismicity has attracted much attention after a series of moderate–strong earthquakes, especially the Yangbi Ms6.4 earthquake that occurred on 21 May 2021. In the present research, we investigate major and trace elements, as well as hydrogen and oxygen isotopes, of 10 hot springs sites located along the WQF, which are recharged by infiltrated precipitation from 1.9 to 3.1 km. The hydrochemical types of most analyzed geothermal waters are HCO3SO4-Na, SO4Cl-NaCa, and SO4-Ca,

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Menant, Armel, Samuel Angiboust, Patrick Monié, Onno Oncken, and Jean-Michel Guigner. "Brittle deformation during Alpine basal accretion and the origin of seismicity nests above the subduction interface." Earth and Planetary Science Letters 487 (April 2018): 84–93. http://dx.doi.org/10.1016/j.epsl.2018.01.029.

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29

Zahibo, N., and E. N. Pelinovsky. "Evaluation of tsunami risk in the Lesser Antilles." Natural Hazards and Earth System Sciences 1, no. 4 (2001): 221–31. http://dx.doi.org/10.5194/nhess-1-221-2001.

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Abstract. The main goal of this study is to give the preliminary estimates of the tsunami risks for the Lesser Antilles. We investigated the available data of the tsunamis in the French West Indies using the historical data and catalogue of the tsunamis in the Lesser Antilles. In total, twenty-four (24) tsunamis were recorded in this area for last 400 years; sixteen (16) events of the seismic origin, five (5) events of volcanic origin and three (3) events of unknown source. Most of the tsunamigenic earthquakes (13) occurred in the Caribbean, and three tsunamis were generated during far away ea

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GAJEK, W., J. TROJANOWSKI, and M. MALINOWSKI. "Automating long-term glacier dynamics monitoring using single-station seismological observations and fuzzy logic classification: a case study from Spitsbergen." Journal of Glaciology 63, no. 240 (2017): 581–92. http://dx.doi.org/10.1017/jog.2017.25.

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ABSTRACTRetreating glaciers are a consequence of a warming climate. Thus, numerous monitoring campaigns are being carried out to increase understanding of this on-going process. One phenomenon related to dynamic glacial changes is glacier-induced seismicity; however, weak seismic events are difficult to record due to the sparse seismological network in arctic areas. We have developed an automatic procedure capable of detecting glacier-induced seismic events using records from a single permanent seismological station. To distinguish between glacial and non-glacial signals, we developed a fuzzy

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Kaban, Mikhail K., Sami El Khrepy, and Nassir Al-Arifi. "Density structure and isostasy of the lithosphere in Egypt and their relation to seismicity." Solid Earth 9, no. 4 (2018): 833–46. http://dx.doi.org/10.5194/se-9-833-2018.

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Abstract. A joint analysis of the new satellite–terrestrial gravity field model with recent data on the crustal structure and seismic tomography was conducted to create an integrative model of the crust and upper mantle and to investigate the relation of the density structure and the isostatic state of the lithosphere to the seismicity of Egypt. We identified the distinct fragmentation of the lithosphere of Egypt in several blocks. This division is closely related to the seismicity patterns in this region. The relatively dense and strong lithosphere in the Nile Delta limits the seismic activit

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Kalpna and R. Chander. "On some microearthquakes near Tarbela reservoir during three low water stands." Bulletin of the Seismological Society of America 87, no. 1 (1997): 265–71. http://dx.doi.org/10.1785/bssa0870010265.

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Abstract Detailed 3D stress analyses with a simulated model of Tarbela reservoir indicate that most nearby seismogenic faults inferred from observations of preimpoundment seismicity in the region should be stabilized even when the reservoir has low water levels during dry seasons. We hypothesize that the hypocenters of some microearthquakes occurring close to the reservoir during dry seasons of 1977, 1980, and 1981 were located on those of the above faults that are destabilized by accumulation of broadly north-south horizontal compressive stresses of plate tectonic origin. An order of magnitud

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Stemberk, Josef, Miloš Briestenský, and Stefan Cacoń. "The recognition of transient compressional fault slow−slip along the northern shore of Hornsund Fjord, Sw Spitsbergen, Svalbard." Polish Polar Research 36, no. 2 (2015): 109–23. http://dx.doi.org/10.1515/popore-2015-0007.

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AbstractThis paper presents the results of direct 3−D fault displacement monitoring along the northern shore of Hornsund Fjord, SW Spitsbergen, Svalbard. The fault displacements have been recorded using three permanently installed optical−mechanical crack gauges since 2009. The monitoring data from all three sites provided evidence for a remarkable slip event that lasted from September 2011 to May 2012. The cause is discussed in some detail with consideration given to both exogenic (temperature changes, surface processes) and endogenic processes (isostatic rebound and regional seismicity). It

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Amitrano, David, Stéphane Gaffet, Jean-Philippe Malet, and Olivier Maquaire. "Understanding mudslides through micro-seismic monitoring: the Super-Sauze (South-East French Alps) case study." Bulletin de la Société Géologique de France 178, no. 2 (2007): 149–57. http://dx.doi.org/10.2113/gssgfbull.178.2.149.

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Abstract The macroscopic deformation of rocks, at scales ranging from laboratory samples (cm) to rock hillslopes and earth crust (hm to km), is associated with local irreversible processes (cracks/faults propagation and shearing). These movements involve propagation of acoustic waves, which can be observed by remote sensing. Seismic monitoring during strain progression can help our understanding of rock behaviour and lead to the recognition of failure precursors. Although of significant potential, this observational tool has had only limited application in the study of gravitational instabilit

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Wallace, Laura M. "Slow Slip Events in New Zealand." Annual Review of Earth and Planetary Sciences 48, no. 1 (2020): 175–203. http://dx.doi.org/10.1146/annurev-earth-071719-055104.

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Continuously operating global positioning system sites in the North Island of New Zealand have revealed a diverse range of slow motion earthquakes on the Hikurangi subduction zone. These slow slip events (SSEs) exhibit diverse characteristics, from shallow (<15 km), short (<1 month), frequent (every 1–2 years) events in the northern part of the subduction zone to deep (>30 km), long (>1 year), less frequent (approximately every 5 years) SSEs in the southern part of the subduction zone. Hikurangi SSEs show intriguing relationships to interseismic coupling, seismicity, and tectonic t

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Hernández-Marín, M., N. González-Cervantes, J. Pacheco-Martínez, and D. H. Frías-Guzmán. "Discussion on the origin of surface failures in the Valley of Aguascalientes, México." Proceedings of the International Association of Hydrological Sciences 372 (November 12, 2015): 235–38. http://dx.doi.org/10.5194/piahs-372-235-2015.

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Abstract. Surface failures have been observed in the valley of Aguascalientes since the early 1980's. Although, groundwater pumping began in the early 1950's but became intensive until the late 1970's, when many of the surface failures appeared. For this reason, surface deformation (surface failures and land subsidence) has been associated to groundwater withdrawal. Recent observations, however, suggest that some of these surface discontinuities are the result of natural geologic stresses rather than those associated groundwater decline, at least in its origin. Geologically, this valley is a t

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Potirakis, S. M., G. Minadakis, and K. Eftaxias. "Relation between seismicity and pre-earthquake electromagnetic emissions in terms of energy, information and entropy content." Natural Hazards and Earth System Sciences 12, no. 4 (2012): 1179–83. http://dx.doi.org/10.5194/nhess-12-1179-2012.

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Abstract. In this paper we show, in terms of Fisher information and approximate entropy, that the two strong impulsive kHz electromagnetic (EM) bursts recorded prior to the Athens earthquake (EQ) (7 September 1999, magnitude 5.9) present compatibility with the radar interferometry data and the seismic data analysis, which indicates that two fault segments were activated during Athens EQ. The calculated Fisher information and approximate entropy content ratios closely follow the radar interferometry result that the main fault segment was responsible for 80 % of the total energy released, while

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Chen, Chen, Hersh Gilbert, Christopher Andronicos, et al. "Shear velocity structure beneath the central United States: implications for the origin of the Illinois Basin and intraplate seismicity." Geochemistry, Geophysics, Geosystems 17, no. 3 (2016): 1020–41. http://dx.doi.org/10.1002/2015gc006206.

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Trifonov, B. A., and V. V. Sevost'yanov. "SPECIFICS OF PERFORMING SEISMIC MICROZONING IN THE URBANIZED COASTAL AREA OF GELENDZHIK CITY FOR HIGH-RISE CONSTRUCTION." Engineering survey 12, no. 5-6 (2018): 82–90. http://dx.doi.org/10.25296/1997-8650-2018-12-5-6-82-90.

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The initial (background) seismicity of the territory of Gelendzhik with the high responsibility buildings projected for construction of (35-storey towers 123 meters high) is equal to 9 points according to the Map of General Seismicity of Russia (OSR-2015(B)) with the period of recurrence of tremors 1 time per 1000 years. The purpose of the study was to obtain the parameters of predictive seismic impacts for the site of the proposed construction taking into account regional seismotectonic and local seismic soil conditions. The influence of ground conditions on the on the seismicity of the resea

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Camelbeeck, Thierry, Koen Van Noten, Thomas Lecocq, and Marc Hendrickx. "The damaging character of shallow 20th century earthquakes in the Hainaut coal area (Belgium)." Solid Earth 13, no. 3 (2022): 469–95. http://dx.doi.org/10.5194/se-13-469-2022.

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Abstract. The present study analyses the impact and damage of shallow seismic activity that occurred from the end of the 19th century until the late 20th century in the coal area of the Hainaut province in Belgium. This seismicity is the second-largest source of seismic hazard in north-western Europe after the Lower Rhine Embayment. During this period, five earthquakes with moment magnitudes (Mw) around 4.0 locally caused moderate damage to buildings corresponding to maximum intensity VII on the European Macroseismic Scale 1998 (EMS-98). Reviewing intensity data from the official macroseismic

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Klaasen, Sara, Solvi Thrastarson, Yeşim Çubuk-Sabuncu, et al. "Subglacial volcano monitoring with fibre-optic sensing: Grímsvötn, Iceland." Volcanica 6, no. 2 (2023): 301–11. http://dx.doi.org/10.30909/vol.06.02.301311.

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We present a distributed acoustic sensing (DAS) experiment at Grímsvötn, Iceland. This is intended to investigate volcano-microseismicity at Grímsvötn specifically, and to assess the suitability of DAS as a subglacial volcano monitoring tool in general. In spring 2021, we trenched a 12 km long fiber-optic cable into the ice sheet around and within the caldera, followed by nearly one month of continuous recording. An image processing algorithm that exploits spatial coherence in DAS data detects on average ~100 events per day, almost 2 orders of magnitude more than in the regional earthquake cat

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Niyogi, Shankho, Abhijit Ghosh, Abhash Kumar, and Richard W. Hammack. "Tremor signals during fluid injection are generated by fault slip." Science 381, no. 6657 (2023): 553–58. http://dx.doi.org/10.1126/science.adh1331.

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Seismic tremor signals, also known as long-period, long-duration signals, have been reported in several locations where fluid injection for enhanced oil and gas exploration is taking place. However, the origin of these signals remains poorly constrained. We studied seismic tremor signals in Wellington Field, Kansas, using a seismic array during a carbon dioxide injection program. We show that these signals are generated below the surface during the time of carbon dioxide injection. They have a distinct spectral signature, similar to those observed in glacial and volcanic environments. The trem

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Shcherbina, S. V., P. G. Pigulevskyi, I. Yu Gurova, et al. "A study of the properties of the tectonic structure of the Kryvyi Rih city based on statistical analysis of seismicity." Geofizicheskiy Zhurnal 43, no. 6 (2022): 248–65. http://dx.doi.org/10.24028/gzh.v43i6.251566.

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The article concerns results of studying two significant seismic events — an explosion (23.09.2020 09:00) and an earthquake (30.09.2020 20:00), which occurred in the area of the city of Kryvyi Rih. There were developed algorithms to process records by the Kryvyi Rih seismic station. There was done a comprehensive interpretation of the seismologic and geological-geophysical data. The seismic events’ coordinates were determined, the quality of seismological data processing was evaluated based on the expert method, the level of trustworthiness of the resulting parameters was estimated. The nature

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Knapp, James H., Camelia C. Knapp, Victor Raileanu, Liviu Matenco, Victor Mocanu, and Cornel Dinu. "Crustal constraints on the origin of mantle seismicity in the Vrancea Zone, Romania: The case for active continental lithospheric delamination." Tectonophysics 410, no. 1-4 (2005): 311–23. http://dx.doi.org/10.1016/j.tecto.2005.02.020.

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Yaghoubi, Ali, SeyedBijan Mahbaz, Maurice B. Dusseault, and Yuri Leonenko. "Seismicity and the State of Stress in the Dezful Embayment, Zagros Fold and Thrust Belt." Geosciences 11, no. 6 (2021): 254. http://dx.doi.org/10.3390/geosciences11060254.

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This study focuses on determining the orientation and constraining the magnitude of present-day stresses in the Dezful Embayment in Iran’s Zagros Fold and Thrust Belt. Two datasets are used: the first includes petrophysical data from 25 wells (3 to 4 km deep), and the second contains 108 earthquake focal mechanisms, mostly occurring in blind active basement faults (5 to 20 km deep). Formal stress inversion analysis of the focal mechanisms demonstrates that there is currently a compressional stress state (Aφ=2.0–2.2) in the basement. The seismologically determined SHmax direction is 37° ± 10°,

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Juraev, R. U. "TADJIKABAD EARTHQUAKE of JULY 4, 2020 with Мs=5.2, I0=7 (TAJIKISTAN)". Earthquakes in Northern Eurasia, № 27 (17 грудня 2024): 313–22. https://doi.org/10.35540/1818-6254.2024.27.28.

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Instrumental and macroseismic data are presented for the Tadjikabad earthquake on July 4, 2020 with intensity in the epicenter I0=7 and surface wave magnitude Ms=5.2, which has happened in the eastern part of Tajikistan, in the crest area of Peter the Great Ridge. This seismic event has been accompanied by numerous aftershocks (NΣ=137), which spread area has the form of ellipse stretched in sub-meridional direction with axes 83 and 96 km. The information about the earthquake perceptibility has been collected in 32 settlements and the map with isoseist of I=7, 6, 5, 4 has been created. Descript

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Masci, F., and J. N. Thomas. "Review Article: On the relation between the seismic activity and the Hurst exponent of the geomagnetic field at the time of the 2000 Izu swarm." Natural Hazards and Earth System Sciences 13, no. 9 (2013): 2189–94. http://dx.doi.org/10.5194/nhess-13-2189-2013.

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Abstract. Many papers document the observation of earthquake-related precursory signatures in geomagnetic field data. However, the significance of these findings is ambiguous because the authors did not adequately take into account that these signals could have been generated by other sources, and the seismogenic origin of these signals have not been validated by comparison with independent datasets. Thus, they are not reliable examples of magnetic disturbances induced by the seismic activity. Hayakawa et al. (2004) claim that at the time of the 2000 Izu swarm the Hurst exponent of the Ultra-L

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Masci, F., and J. N. Thomas. "Review "On the relation between the seismic activity and the Hurst exponent of the geomagnetic field at the time of the 2000 Izu swarm"." Natural Hazards and Earth System Sciences Discussions 1, no. 2 (2013): 681–91. http://dx.doi.org/10.5194/nhessd-1-681-2013.

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Abstract. Many papers document the observation of earthquake-related precursory signatures in geomagnetic field data. However, the significance of these findings is ambiguous because the authors did not adequately take into account that these signals could have been generated by other sources, and the seismogenic origin of these signals have not been validated by comparison with independent datasets. Thus, they are not reliable examples of magnetic disturbances induced by the seismic activity. Hayakawa et al. (2004) claim that at the time of the 2000 Izu swarm the Hurst exponent of the Ultra-L

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Scafidi, Davide, Alfio Viganò, Jacopo Boaga, et al. "A dense micro-electromechanical system (MEMS)-based seismic network in populated areas: rapid estimation of exposure maps in Trentino (NE Italy)." Natural Hazards and Earth System Sciences 24, no. 4 (2024): 1249–60. http://dx.doi.org/10.5194/nhess-24-1249-2024.

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Abstract. The micro-electromechanical system (MEMS)-based seismic network of Trentino (NE Italy) consists of 73 low-cost accelerometers installed close to inhabited areas. These sensors have a suitable sensitivity to detect moderate-to-strong earthquakes but are able to record even weaker seismicity. The densely distributed peak ground acceleration values recorded by MEMS and other types of stations are integrated within the existing seismic monitoring procedure in order to automatically obtain a complete set of strong motion parameters a few minutes after the origin time. The exposure of the

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Boudoire, Guillaume, Lydie Gailler, Jean Battaglia, et al. "Scientific response to the 2021–2022 seismic swarm in the Monts Dore volcanic province (France): dynamic insights from temporal surveys (2/2)." Comptes Rendus. Géoscience 357, G1 (2025): 79–103. https://doi.org/10.5802/crgeos.285.

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During years 2021–2022, an unusual seismic swarm was recorded at crustal level beneath the Monts Dore volcanic province (France). Complementary field and remote measurements were performed. Together with the time series recorded on the seismological and GNSS national networks, these measurements were fundamental for monitoring the evolution of the seismic swarm and deciphering its origin. Although a potential vertical migration of the seismic events is suggested, the complementary measurements presumably discard the hypothesis of magma intrusion at shallow crustal level. The ascent of a CO2-ri

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