The seismic observations in the Carpathian region in 2013, which were conducted, as before, by two organizations from two states: in Ukraine, by the seismicity department of the Carpathian region of the Institute of Geophysics of the National Academy of Sciences of Ukraine, and in Moldova by the seismology laboratory of the Institute of Geology and Seismology of the Academy of Sciences of Moldova are described. There were 19 digital stations with a processing center in Lviv, Ukraine, and 6 stations with a center in Chisinau, Moldova. Various programs, local hodographs, and magnitudes were used. The consolidated catalog of earthquakes is created in Lviv. The map of epicenters and the table of the distribution of earthquakes of differ-ent classes by regions are given. The total number of earthquakes in 2013 was N=98 in the range of КР=5.7–14.1 and the depth interval of hypocenters h=1–150 km with total seismic energy Е=1.331014 J. Of these, 19 earthquakes with depths h=80–160 km is located in the Vrancea zone. Two maximum earth-quakes with КР=14.1 and КР=12.3 were recorded on October 6 and 15 in the Vrancea mountains with h=139.8 and 140.9 km. In Forecarpathians and Transcarpathia all earthquakes are weaker. The most significant event in Transcarpathia was the earthquake on April 4, 2013, with КР=8.4 in the area of «Nizhnее Selishche» seismic station. The earthquake source is located in the earth's crust at a depth of h=1.7 km. The earthquake was felt by the population of the Village Nizhnее Selishche with an intensity I=3–4. In general, in all seismic active zones of the Carpathians in 2013, there was a slight increase in the level of seismicity compared with that in 2012.
The article describes seismic observations in the Carpathian region in 2016–2017, which were carried out, as before, by two organizations from two states: in Ukraine – the seismicity department of the Carpathian region of the Institute of Geophysics of the NAS of Ukraine, in Moldova – the seismology laboratory of the Institute of Geology and Seismology of the Academy of Sciences of Moldova. In Ukraine, 20 stationary digital stations and 1 temporary in the area of Stebnik with a processing center in Lviv, in Moldova – six stations with a center in Chisinau. Different programs, local hodographs and magnitudes were used. The consolidated catalog of earthquakes was created in Lviv. A maps of epicenters and a table of the distribution of earthquakes of different classes by region are given. The total number of earthquakes in 2016–2017 was NΣ=140 in the range KR =4.0–14.4 with depths h=1–160 km and the total seismic energy ΣE=2.92·1014 J. The maximum earthquake with KR=14.4, MSH=5.7 and hрР=95 km was registered on September 23, 2016 located in the Vrancea zone. The earthquake was felt by the population in Romania and Moldova. In the cities of Chisinau and Cahul, the earthquake was felt with intensity I=3–4 points. In the Precarpathian and Transcarpathian regions, all earthquakes are weaker. The strongest event in Transcarpathia was a tangible earthquake, which occurred north of the village of Uglya, Tyachevo district, on June 6, 2017 with KR=9.8, of h=5 km. The earthquake was felt by the population of 20 settlements with an intensity ranging from 2 to 4–5 points. The most powerful event in Precarpathian in 2016–2017 there was a tangible earthquake that occurred in the Drohobych district of the Lvov region on September 29, 2017 with KR=9.8 at a depth of 1.9 ± 0.4 km. Perhaps it was a tectonic earthquake that triggered a collapse in the mine, or vice versa – the collapse of the rocks was recorded as a seismic event. The strongest event in Bukovina was an earthquake that occurred on July 12, 2016 at 18h21m with an energy class of KR=9.9 and magnitude МSH=3.0 in the area of the village of Kurazhin, Khmelnitsky region and was felt by the population with an intensity of 3–4 points. In general, in the seismically active zone of Vrancea and Bukovina in 2016–2017 there was an increase in the level of seismicity compared to those in 2012–2015, and in areas № 1, 3 and 8 there was a slight decrease in the level of seismicity.
The instrumental and macroseismic data of the Teresvа-II earthquake on July 19, 2015 with the energy class KR=11.1, МSH=3.4 are considered. The earthquake occurred in the seismically active Tyachevo-Sigetskaya zone of Transcarpathia in the upper part of the Earth's crust and caused shaking intensity of I0=6 in the epicentral zone near the village of Teresva. The data on the focal mechanism solution, intensity distribution, parameters of the strongest aftershocks are presented. The release of seismic energy continued for 35 days. During this time, 306 earthquakes were recorded in a wide energy range. The space-time and energy properties of the complex sequence of the Teresvа earthquakes in 2015 have been investigated. The tectonics and previous seismi-city of the area are described.
On June 6, 2017 at 17h27m in the mountains north of Uglya of the Tyachiv district of the Transcarpathian region, at a depth of h=5 km, a significant earthquake with energy class KR=9.8 and local magnitude ML=2.7 occurred. The earthquake was processed by records of 16 seismic stations of the Carpathian network. Immediately after the earthquake, information on its impact was collected through a telephone survey in 23 settlements located at distances of 5–30 km from the epicenter. As a result of processing the survey data from 23 settlements, an isoseismal map of the earthquake was constructed. The epicenter of the earthquake was located in an unpopulated mountainous area, where a calculated intensity was I0=5 by the MSK-64 scale. In the epicentral zone, it was felt with an intensity of 4–5 in 3 settlements: Prygid, Velikaya Ugolka and Fontynasy. According to a comparison with the map of the fault structures of the Solotvinskaya depression of the Transcarpathian trough and adjacent territories, it is clear that this earthquake is located in the zone between the Chernogolovsky and the Penin faults, where a lot of fault structures are noted, including an unclear morphology.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.