Journal of Volcanology and Seismology最新文献_第5页

New Data on the Parameters of Historical Tsunami and Geological Traces of Coseismic Subsidences on the Coast of Khalaktyrsky Beach (Avacha Bay, Kamchatka) 堪察加半岛阿瓦恰湾Khalaktyrsky海滩历史海啸参数和同震沉降地质痕迹的新资料

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700484

T. K. Pinegina

引用次数: 0

The Chronology of the Activity of the Extrusive Dome at the Western Slope of the Shiveluch Volcano in 2023‒2024 2023-2024年Shiveluch火山西坡喷出穹隆活动年代学

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700538

V. I. Frolov, R. I. Cherkashin, A. Yu. Ozerov, K. S. Ryabinkin, I. A. Nuzhdaev

引用次数: 0

Multipurpose Studies of the Karymsky Volcano during the Inter-Eruptive Period from August 14–28, 2024 2024年8月14-28日Karymsky火山爆发间期的多目的研究

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700617

Ya. A. Bakhmatova, D. V. Melnikov, E. G. Kalacheva, D. V. Chebrov

引用次数: 0

The 1935‒2024 Summit Eruptions of the Klyuchevskoy Volcano 1935年至2024年克柳切夫斯基火山喷发

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700605

O. A. Girina

引用次数: 0

An Experience in the Application of Magnetotelluric Sounding to the Study of Geoelectrical Features at the Ketkino Field of Thermal Waters, Kamchatka 大地电磁测深技术在堪察加Ketkino温泉田地电特征研究中的应用体会

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700423

V. A. Loginov, Yu. V. Novikov, P. O. Voronin, O. V. Bergal-Kuvikas

引用次数: 0

The 2023‒2025 Eruption of Ebeko Volcano: Monitoring Using a Drone and a Time-Lapse Camera 2023-2025年埃贝科火山喷发：使用无人机和延时相机进行监测

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700575

T. A. Kotenko

{"title":"The 2023‒2025 Eruption of Ebeko Volcano: Monitoring Using a Drone and a Time-Lapse Camera","authors":"T. A. Kotenko","doi":"10.1134/S0742046325700575","DOIUrl":"10.1134/S0742046325700575","url":null,"abstract":"The eruption activity of Ebeko Volcano on Paramushir Island, Kuriles starting in January 2022 in the Korbut Crater began to wane in August 2024, ceasing altogether on January 19, 2025. The temperature in the ash–gas columns was measured using an infrared camera from aboard a drone. Its value was 674 ± 104°C involving an uncertainty of ~33% due to absorption by ash in the measurable wavelength range, 8–14 µm. Phreatic explosions were also occurring along the periphery of the active vent during the period August 8–15, 2024 producing fissures and ditches, including those in the Middle Crater. The formation of linear/ring structures may indicate local failure due to tension caused by subsidence of the volcanic edifice after the top of the magmatic column was removed by violent explosions when fresh magma was supplied in lesser amounts or stopped altogether. A violent explosion occurred on May 25, 2025 hurling bombs to distances of 1.5 km at velocities of ∼120 m/s. The explosions of August 8, 2024 and May 25, 2025 caused the descent of several lahars that were occasionally as long as 2 km. The infrared survey from aboard the drone helped update maps of thermal anomalies on the volcano on a regular basis. Two fumarolic fields near the Korbut Crater were completely buried under pyroclastic material, while the others persisted in their limits. Areas of steam-gas discharge were added due to the activity of newly formed fissures produced by the August 2024 phreatic explosions, also at the western rim of the Middle Crater. The temperature in the Korbut Crater decreased from 500 ± 102°C in 2023–2024 down to 160 ± 40°C in June 2025.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"19 1","pages":"S55 - S62"},"PeriodicalIF":0.9,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339273","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 Dynamics of the Morphology and Deposit Temperature Changes and the Volume of Erupted Material of the Corresponding Member of the RAS G.S. Gorshkov Vent (Klyuchevskoy Volcano) in 2021–2024 2021-2024年RAS G.S. Gorshkov火山口（克柳切夫斯科伊火山）对应段形态、沉积温度及喷发物体积的动态变化

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700526

R. I. Cherkashin, Yu. V. Demyanchuk, I. A. Nuzhdaev, V. A. Tsvetkov, A. L. Khomchanovsky, A. Yu. Ozerov

{"title":"The Dynamics of the Morphology and Deposit Temperature Changes and the Volume of Erupted Material of the Corresponding Member of the RAS G.S. Gorshkov Vent (Klyuchevskoy Volcano) in 2021–2024","authors":"R. I. Cherkashin, Yu. V. Demyanchuk, I. A. Nuzhdaev, V. A. Tsvetkov, A. L. Khomchanovsky, A. Yu. Ozerov","doi":"10.1134/S0742046325700526","DOIUrl":"10.1134/S0742046325700526","url":null,"abstract":"Based on results of a field ground/unmanned aerial vehicle (UAV) and temperature observations in 2021–2024, the dynamics of morphology and temperature changes of a scoria cone of the Corresponding Member of the RAS G.S. Gorshkov vent (hereinafter, the G.S. Gorshkov vent), which erupted at the Klyuchevskoy volcano from February 18 to March 21, 2021, is analyzed. The morphology of the cinder cone of the vent changed within 3 years after the eruption: the diameter of the base decreased from 136.5 to 122.5 m and the crater size increased from 17 × 19 to 44 × 39 m due to collapses. The maximum cone temperatures decreased from 165.4°C in 2021 to 127.1°C in 2024. The detailed digital UAV survey-based elevation models showed that the steepness of the cinder cone slopes increased by 4°–6°, on average, from 2021 to 2024. The location of the G.S. Gorshkov vent on the large Erman glacier was responsible for the formation of failures and collapse walls up to 25-m deep in the glacier body due to intrusion of incandescent lava. Dynamic morphological changes of the cinder cone are probably also related to the subsidence of the glacier from prolonged contact with hot igneous rocks. Estimated from the Arctic DEM satellite data, the volume of erupted material of the G.S. Gorshkov vent was ~0.003 km3.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"19 1","pages":"S103 - S109"},"PeriodicalIF":0.9,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339327","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

Routine Estimation of the Prospect of Individual Forecasts and Their Efficiency 个别预报前景的常规估计及其效率

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700472

V. A. Saltykov, D. V. Chebrov

{"title":"Routine Estimation of the Prospect of Individual Forecasts and Their Efficiency","authors":"V. A. Saltykov, D. V. Chebrov","doi":"10.1134/S0742046325700472","DOIUrl":"10.1134/S0742046325700472","url":null,"abstract":"One of the main tasks facing the Kamchatka Branch of the Russian Expert Council on Earthquake Prediction and Seismic Risk Assessment (KB REC) is to evaluate submitted forecasts of large earthquakes. The experience at the KB REC showed that forecasts predicting the future evolution of a seismicity situation submitted by researchers very frequently contain merely some individual elements necessary for prediction, which is clearly insufficient. Examination of such forecasts is difficult, and occasionally outright impossible, which complicates the use of such data in the analysis of seismicity situations and the development of a comprehensive forecast evaluation. While the evaluation of the success of a forecast causes no difficulty to a first approximation, a preliminary (at the time the forecast is submitted) evaluation of the quality of a forecast in any form is frequently difficult. This especially concerns novel or recently developed prediction procedures, that is, procedures without a “history” at the KB REC. It is such forecasts which constitute the object of this study. The tasks we set ourselves to resolve are (1) developing a procedure applicable to the evaluation of a forecast at the time it is submitted, including the estimation of the probability of random occurrence, (2) estimation of the success of a forecast when any statistics based on the use of this particular prediction procedure is absent. This paper presents the approaches used at the KB REC for routine evaluation of the success of a forecast and/or precursors. All parameters used to evaluate prediction procedures and their practical application are formalized and possess clear physical meaning.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"19 1","pages":"S152 - S160"},"PeriodicalIF":0.9,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339328","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

Experimental Study of Fragmentation of Highly Viscous Magma by Rapid Decompression 高粘性岩浆快速减压破碎的实验研究

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700629

M. A. Alidibirov

{"title":"Experimental Study of Fragmentation of Highly Viscous Magma by Rapid Decompression","authors":"M. A. Alidibirov","doi":"10.1134/S0742046325700629","DOIUrl":"10.1134/S0742046325700629","url":null,"abstract":"The paper reviews the results of laboratory investigations into fragmentation of highly viscous magma (porous dacite samples from the cryptodome of Mount St. Helens) by rapid decompression. Setups for experimental study of fragmentation of analog materials and natural samples of highly viscous dacite magma under rapid decompression (overpressure up to 200 bar and temperature up to 1000°C) are discussed. The fragmentation thresholds (critical pressure differences between included bubbles and surrounding magma that lead to fragmentation of a pressurized sample) were determined for porous dacitic samples. The threshold pressure contrasts were found to range between 90 and 30 bar (with dacite temperature changing from 15 to 900°C). The fragmentation rate of porous dacite samples, N, was estimated to be 5–170 m/s. It increased with pressure differential ∆P and decompression rate. The study of the fragmentation products has shown that dacite samples fragment at a temperature of 900°C exclusively brittlely. The experiments conducted at temperatures T = 20°C and 900°C with overpressure ∆P in the range 10–185 bar have shown that with increase in overpressure ∆P and decompression rate, the characteristic size of particles formed by fragmentation decreases. From the experiments conducted at ∆P = 120 bar and a temperature T = 15–900°C it was derived that increase in temperature T hinders fragmentation (fragmented ejecta become larger) and leads to bimodal particle size distribution.","PeriodicalId":56112,"journal":{"name":"Journal of Volcanology and Seismology","volume":"19 1","pages":"S1 - S16"},"PeriodicalIF":0.9,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339710","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

Integrated Geological and Geophysical Studies of the Submarine Volcanoes of the Paramushir Group (Kuril Island Arc) 千岛岛弧副火山群海底火山地质与地球物理综合研究

IF 0.9 4区地球科学

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI: 10.1134/S0742046325700496

V. A. Rashidov, V. I. Bondarenko, A. A. Dolgaya, V. V. Petrova, O. V. Pilipenko, Yu. I. Blokh, A. A. Trusov

引用次数: 0