Journal of Volcanology and Seismology最新文献_第2页

The Twenty Five Years of “Volcanic Activity Monitoring”—Observations and Results “火山活动监测”25年的观测与结果

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-07-24 DOI: 10.1134/S0742046326600142

S. L. Senyukov, D. V. Droznin, I. N. Nuzhdina, S. Ya. Droznina

{"title":"The Twenty Five Years of “Volcanic Activity Monitoring”—Observations and Results","authors":"S. L. Senyukov, D. V. Droznin, I. N. Nuzhdina, S. Ya. Droznina","doi":"10.1134/S0742046326600142","DOIUrl":"10.1134/S0742046326600142","url":null,"abstract":"February 2, 2025 marked the 25th anniversary since the start of the Monitoring of Volcanic Activity project conducted by the Kamchatka Branch (KB) of the Geophysical Survey (GS) of the Russian Academy of Sciences (RAS). At present time the studies are being conducted in near real time in four directions: (1) seismicity monitoring, (2) visual and video observations, (3) satellite-based monitoring, and (4) infrasound control. The daily work conducted by the Kamchatka Branch to acquire, to process, and to present the information on volcanic activity enables timely and reasonable assessment of the state of volcanoes, yielding conclusions as to possible developments of volcanic activity. The monitoring results are daily published in the factual database “Activity of Kamchatka Volcanoes”. The original variant of the database using pages in the html format did not envisage full-scale research using the stored observation and processing results; for this reason a new database was developed in 2014 for the Eruptions of Volcanoes in Kamchatka and on the Kuril Islands system, in addition to a package of program modules for data processing. The observation and processing results systematized for the 25 years of this work provided for and helped achieve successes in dealing with problems arising in short-term prediction of strong paroxysmal eruptions on Bezymianny, Klyuchevskoi, and Kizimen volcanoes. For the case of such rarely erupting volcanoes as, e.g., Koryaksky, Avachinsky, Mutnovsky, Gorely, Plosky Tolbachik, and Kambalny, the work involved recording and systematizing seismic and other geophysical data, which will contribute to a better assessment of their volcanic hazard in the future.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"20 4","pages":"284 - 304"},"PeriodicalIF":0.9,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The 2025 MW 8.8 Kamchatka Earthquake, Typical Precursors and Characteristics 2025年堪察加8.8级地震的典型前兆和特征

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-07-24 DOI: 10.1134/S0742046326600154

M. V. Rodkin, E. V. Liperovskaya

引用次数: 0

Explosive Activity of Avachinsky Volcano (Kamchatka): Tephra Dispersal, Eruption Magnitudes and Related Hazards 堪察加阿瓦钦斯基火山的爆炸活动：热菌扩散、喷发震级及相关危害

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-05-10 DOI: 10.1134/S0742046326700156

E. A. Zelenin, V. V. Ponomareva, O. V. Dirksen, A. A. Dolgaya, L. I. Bazanova

{"title":"Explosive Activity of Avachinsky Volcano (Kamchatka): Tephra Dispersal, Eruption Magnitudes and Related Hazards","authors":"E. A. Zelenin, V. V. Ponomareva, O. V. Dirksen, A. A. Dolgaya, L. I. Bazanova","doi":"10.1134/S0742046326700156","DOIUrl":"10.1134/S0742046326700156","url":null,"abstract":"Understanding the frequency, dispersal areas, and volumes of tephra fall deposits is essential for assessing related hazards and estimating magma output rates. At the same time, deriving quantitative eruption parameters is often hindered by limited field data on eruptive deposits and, in island-arc settings, by the dispersal of airborne tephra over the sea, where mapping depends on the availability of sediment cores. For frequently erupting volcanoes, obtaining volume estimates are especially challenging because of difficulties in field mapping of numerous and often similar looking tephra fall deposits. In this paper, we present newly calculated conservative estimates of dispersal areas, tephra volumes, and eruption magnitudes for Avachinsky volcano (Kamchatka, NW Pacific), one of the most active and hazardous Holocene volcanoes, located close to the Petropavlovsk-Kamchatsky–Elizovo urban area. Our estimates are based on a compilation of published isopach maps and tephra occurrence sites, complemented by new data, and on a systematic approach to tephra volumes calculations. This research provides a solid basis for future efforts to define the Avachinsky magma production rate and to improve hazard modeling.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"20 3","pages":"225 - 236"},"PeriodicalIF":0.9,"publicationDate":"2026-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147863121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nowcasting Earthquakes in North China 中国北方临近预报地震

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-05-10 DOI: 10.1134/S0742046326700132

Sonu Devi, Sumanta Pasari, Nurtiti Sunsui

{"title":"Nowcasting Earthquakes in North China","authors":"Sonu Devi, Sumanta Pasari, Nurtiti Sunsui","doi":"10.1134/S0742046326700132","DOIUrl":"10.1134/S0742046326700132","url":null,"abstract":"North China, a seismically active and densely populated region in East Asia, requires timely seismic risk assessment to enhance disaster preparedness and reduce potential impacts. This study employs an area–based earthquake nowcasting method to assess the current seismic cycle progression in 12 major cities across North China and its surrounding regions. We use the idea of natural times, the inter–event counts of small earthquakes between consecutive large events, to compute the Earthquake Potential Score (EPS) for each target city region. To determine the most suitable model for natural time statistics, we evaluate eight probability distributions. Statistical analysis of 25 observed natural times reveals that the exponential model best represents the data. As of March 25, 2025, EPS values for M ≥ 6.0 earthquakes range from 32 to 84%, with the highest score observed in Dalian (84%), followed by Beijing (76%), Tianjin (70%), Shenyang (67%), Tangshan (67%), Hangzhou (66%), Dezhou (66%), Jinan (57%), Hohhot (44%), Nanjing (35%), Haicheng (33%), and Shanghai (32%). These values reflect the progression of each city in its current seismic cycle toward a future M ≥ 6.0 event. This study not only provides critical information to enhance seismic hazard mitigation but also promotes data–driven earthquake preparedness strategies for the region.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"20 3","pages":"247 - 257"},"PeriodicalIF":0.9,"publicationDate":"2026-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147863122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

2022 Eruption of Alaid Volcano (Russia, Atlasov Island) 2022年Alaid火山喷发（俄罗斯阿特拉索夫岛）

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-05-10 DOI: 10.1134/S0742046326700144

A. A. Nuzhdaev, I. E. Bolshakov, V. O. Davydova, R. A. Kuznetsov, L. P. Anikin, E. S. Zhitova, N. K. Samarkina, K. A. Kudryashova, A. N. Matveev

{"title":"2022 Eruption of Alaid Volcano (Russia, Atlasov Island)","authors":"A. A. Nuzhdaev, I. E. Bolshakov, V. O. Davydova, R. A. Kuznetsov, L. P. Anikin, E. S. Zhitova, N. K. Samarkina, K. A. Kudryashova, A. N. Matveev","doi":"10.1134/S0742046326700144","DOIUrl":"10.1134/S0742046326700144","url":null,"abstract":"This paper presents the results of a comprehensive study of the 2022 eruption of Alaid volcano, which occurred from September 15 to December 1, 2022 the work is based on field observations conducted in 2023 and 2025 using unmanned aerial vehicles (including those equipped with thermal imagers), as well as on laboratory studies of the petrographic and geochemical composition of the eruption products. It was established that as a result of the eruption, the volcano’s crater was completely filled by a lava flow, with a volume estimated at no less than 0.04 km3 and a thickness exceeding 20 m in the near-crater part. A new scoria cone, 350–370 m in diameter and at least 60 m high, composed of tephra, formed in the southern part of the crater. The eruption products are homogeneous high-alumina trachybasalts with a high-potassium signature. A comparison of the composition of the 2022 eruption rocks with products from previous historical eruptions was carried out, thereby refining existing geochemical trends. Thermal imaging surveys, as well as direct temperature measurements, recorded a significant decrease in temperature in the crater zone from >550°C in 2023 to 300°C in 2025, with fumarolic activity persisting locally. The lahar depositional cone in the Cape Devyatka area was studied, where stabilization of the coastline is currently observed.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"20 3","pages":"237 - 246"},"PeriodicalIF":0.9,"publicationDate":"2026-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147863120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrogeological Conditions and Discharge Regime of the Verkhne Paratunsky Thermal Springs Verkhne Paratunsky温泉的水文地质条件和流量状况

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-04-24 DOI: 10.1134/S0742046326700090

N. B. Zhuravlev, A. V. Kiryukhin, P. O. Voronin, A. V. Sergeeva, Bo Feng, I. A. Nuzhdaev, Siqing He

{"title":"Hydrogeological Conditions and Discharge Regime of the Verkhne Paratunsky Thermal Springs","authors":"N. B. Zhuravlev, A. V. Kiryukhin, P. O. Voronin, A. V. Sergeeva, Bo Feng, I. A. Nuzhdaev, Siqing He","doi":"10.1134/S0742046326700090","DOIUrl":"10.1134/S0742046326700090","url":null,"abstract":"The Verkhne Paratunsky thermal springs are the large natural discharge zone of the Verkhne Paratunsky low-temperature nitrogen geothermal field (Kamchatka, Russia). Their hydrothermal and hydrogeochemical history, as well as their discharge conditions, were analyzed based on previous (1966–1996) and renewed (2024–2025) monitoring of the spring regime. The experimental and operational releases at the Verkhne Paratunsky geothermal field in 1975–1984 led to a significant change in the discharge parameters: a decrease in the maximum temperature of the springs from 67 to 46°C and a decrease in the total mineralization (a 2‒2.5-fold decrease in Cl and SO4), while the flow rates of the entrained springs (3.5‒8.2 L/s) are close to the initial values before the start of tests. The flow tests carried out at the Verkhne Paratunsky geothermal field in 1975‒1984 led to a significant change in the discharge parameters: a decrease in the maximum temperature of the main springs from 70 to 30–35°C, a decrease in the flow rate from 7.7 to 2.9 kg/s, and a decrease in the mineralization by two times or more (all in average annual terms). By 2025, the flow rates of the main captured springs had recovered to 5 kg/s, the temperature to 49°C, and the mineralization to 50–65% of the initial value. Using the chloride tracer method, an updated assessment of the deep component of the total discharge of the Verkhne Paratunsky springs was estimated varying from 6.3 kg/s (March) to 21.9 kg/s (May) in the annual cycle.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"20 2","pages":"114 - 126"},"PeriodicalIF":0.9,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geomechanical Conditions of Seismic, Volcanic, and Hydrothermal Activity in Kamchatka 堪察加地震、火山和热液活动的地质力学条件

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-04-24 DOI: 10.1134/S0742046326700120

A. V. Kiryukhin, A. V. Solomatin

引用次数: 0

The Use of Georadar and Gas Surveys for Identification of Discontinuities at the Monogenic Cone on the Khalaktyrsky Beach, Avachinsky Gulf, Kamchatka 勘察加半岛阿瓦钦斯基湾Khalaktyrsky海滩单成因锥体不连续性的地质雷达和天然气测量识别

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-04-24 DOI: 10.1134/S0742046326700065

O. V. Bergal-Kuvikas, V. Yu. Pavlova, R. R. Akbashev, E. O. Makarov

引用次数: 0

Three-Dimensional Thermohydrodynamic Model of the Mutnovsky Magma–Hydrothermal System Mutnovsky岩浆-热液系统三维热流体动力学模型

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-04-24 DOI: 10.1134/S074204632670003X

A. Yu. Polyakov, A. V. Kiryukhin

引用次数: 0

Likely Sources of Lithium Mineralization in Intersalt Deposits and a Hydrogeological Model for the Angara–Lena Deposit of Commercial Lithium-Bearing Brine in the Siberian Platform 西伯利亚地台Angara-Lena商业含锂卤水矿床盐间矿床可能的锂矿化来源及水文地质模式

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-04-24 DOI: 10.1134/S0742046326700107

A. G. Vakhromeev, M. A. Danilova, E. V. Demidova, S. K. Kvachko, A. V. Kiryukhin, A. T. Korolkov, A. V. Sergeeva, A. V. Oshchepkova, A. V. Levin, A. P. Gorokhov, A. S. Tsoi, V. V. Lukyanov

{"title":"Likely Sources of Lithium Mineralization in Intersalt Deposits and a Hydrogeological Model for the Angara–Lena Deposit of Commercial Lithium-Bearing Brine in the Siberian Platform","authors":"A. G. Vakhromeev, M. A. Danilova, E. V. Demidova, S. K. Kvachko, A. V. Kiryukhin, A. T. Korolkov, A. V. Sergeeva, A. V. Oshchepkova, A. V. Levin, A. P. Gorokhov, A. S. Tsoi, V. V. Lukyanov","doi":"10.1134/S0742046326700107","DOIUrl":"10.1134/S0742046326700107","url":null,"abstract":"This analysis of the general processes in the localized migration of lithium from the mantle according to the Romanyuk–Tkachev model as the ultimate mutual interaction between mantle plumes in Northeast Asia and in the Mongolia–Okhotsk slab through intermediate upper crustal magma chambers rests on the examination of mutual locations of intrusive bodies in the basement and in the sedimentary cover of the Siberian craton and of localization regions (as proved by drilling) containing commercial rare-metal brines with anomalously high concentrations of lithium in the natural reservoirs of the zone of retarded water exchange in the sedimentary cover of the major Angara–Lena artesian basin. It is shown how the region of brine occurrence that has anomalous lithium concentrations overlies in space the ring anomaly formed by the emplacement of a large pluton of the (hypothetical) Paleoproterozoic Baikal–Taimyr orogenic belt in the Early Proterozoic basement. On the other hand, a group of large deposits of lithium-bearing brines in the sedimentary cover (an analogue of an “ore field”) localizes in the band between the apical part of the giant Usolsky Sill to the west and the Baikal-Patomsky Folded Region (BPFR) foreland to the east. We are discussing the likely role played by large paleohydrothermal systems of magma bodies in the formation of lithium haloes, in the process of its subsequent transfer of hydrothermal fluids, and concentration in naturally occurring brines beneath thick deposits of Cambrian salts.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"20 2","pages":"100 - 113"},"PeriodicalIF":0.9,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0