Bulletin of Volcanology最新文献_第9页

Lateral edifice collapse and volcanic debris avalanches: a post-1980 Mount St. Helens perspective 侧面大厦崩塌和火山碎屑雪崩:1980年后圣海伦斯火山的视角

2区地球科学

Bulletin of Volcanology Pub Date : 2023-10-03 DOI: 10.1007/s00445-023-01662-z

Lee Siebert, Mark E. Reid

{"title":"Lateral edifice collapse and volcanic debris avalanches: a post-1980 Mount St. Helens perspective","authors":"Lee Siebert, Mark E. Reid","doi":"10.1007/s00445-023-01662-z","DOIUrl":"https://doi.org/10.1007/s00445-023-01662-z","url":null,"abstract":"Abstract The 1980 eruption of Mount St. Helens was instrumental in advancing understanding of how volcanoes work. Lateral edifice collapses and the generation of volcanic debris avalanches were not widely recognized prior to that eruption, making assessment of their hazards and risks challenging. The proliferation of studies since 1980 on resulting deposits and evaluation of processes leading to their generation has built on the insights from the 1980 eruption. Volcano-related destabilizing phenomena, such as strength reduction by hydrothermal alteration, deformation and structural modifications from shallow magma intrusion, and thermal pressurization of pore fluids supplement those factors also affecting nonvolcanic slopes and can lead to larger failures. Remote and ground-based monitoring techniques can aid in detecting potentially destabilizing dynamic processes and in forecasting the size and location of future large lateral collapses, although forecasting remains a topic of investigation. More than a thousand large lateral collapse events likely ≥ 0.01 km 3 in volume have now been identified from deposits or inferred from source area morphology, leading to a recognition of their importance in the evolution of volcanoes and the hazards they pose. Criteria for recognition of debris-avalanche deposits include morphological factors and textural characteristics from outcrop to microscopic scale, allowing discrimination from other volcaniclastic deposits. Lateral edifice failure impacts a broad spectrum of volcanic structures in diverse tectonic settings and can occur multiple times during the evolution of individual volcanoes. Globally, collapses ≥ 0.1 km 3 in volume have been documented 5–6 times per century since 1500 CE, with about one per century having a volume ≥ 1 km 3 . Smaller events < 0.1 km 3 are underrepresented in the earlier record but also have high hazard impact.","PeriodicalId":55297,"journal":{"name":"Bulletin of Volcanology","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135696088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Deformation, seismicity, and monitoring response preceding and during the 2022 Fagradalsfjall eruption, Iceland 2022年冰岛Fagradalsfjall火山喷发前和期间的形变、地震活动和监测反应

2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-20 DOI: 10.1007/s00445-023-01671-y

Michelle Parks, Freysteinn Sigmundsson, Vincent Drouin, Ásta R. Hjartardóttir, Halldór Geirsson, Andrew Hooper, Kristín S. Vogfjörd, Benedikt G. Ófeigsson, Sigrún Hreinsdóttir, Esther H. Jensen, Páll Einarsson, Sara Barsotti, Hildur M. Fridriksdóttir

{"title":"Deformation, seismicity, and monitoring response preceding and during the 2022 Fagradalsfjall eruption, Iceland","authors":"Michelle Parks, Freysteinn Sigmundsson, Vincent Drouin, Ásta R. Hjartardóttir, Halldór Geirsson, Andrew Hooper, Kristín S. Vogfjörd, Benedikt G. Ófeigsson, Sigrún Hreinsdóttir, Esther H. Jensen, Páll Einarsson, Sara Barsotti, Hildur M. Fridriksdóttir","doi":"10.1007/s00445-023-01671-y","DOIUrl":"https://doi.org/10.1007/s00445-023-01671-y","url":null,"abstract":"Abstract Following two periods of dike intrusion in 2021 at Fagradalsfjall, Iceland, one of which led to an eruption, a third dike intrusion commenced on 30 July 2022. A sudden increase in seismicity occurred within the diking area, with approximately 1700 automatically detected earthquakes > M1 within 24 h. Strong earthquakes were felt over several days within a wider area (largest M W 5.3). The timeline and spatial distribution of seismicity suggested it resulted from diking, together with triggered seismicity in nearby areas releasing stored tectonic stress. Geodetic observations revealed displacements consistent with a dike intrusion, and geodetic modeling on 2 August revealed a best-fit model with a shallow top depth of the dike (~1 km), and high magma inflow rate (~49 m 3 /s). Also considering a decline in seismicity, a warning was issued that the likelihood of a new eruption in the coming days was high. An effusive eruption started the next day (3 August) on a ~375-m-long fissure, with an initial extrusion rate of 32 m 3 /s. The projected surface location of the dike (from the optimal model) was within 49–110 m of the eruptive fissure. We present a timeline of the activity and monitoring response in the days both preceding and following the eruption onset. We compare the details of the activity that occurred prior to this diking and eruption to the previous events at Fagradalsfjall to improve understanding of unrest preceding eruptions.","PeriodicalId":55297,"journal":{"name":"Bulletin of Volcanology","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136308234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 1

Cleaning volcano-seismic event catalogues: a machine learning application for robust systems and potential crises in volcano observatories 清理火山地震事件目录:用于火山观测站鲁棒系统和潜在危机的机器学习应用

2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-20 DOI: 10.1007/s00445-023-01674-9

Juan Anzieta, Daniel Pacheco, Glyn Williams-Jones, Mario C. Ruiz

引用次数: 0

Rapid provision of maps and volcanological parameters: quantification of the 2021 Etna volcano lava flows through the integration of multiple remote sensing techniques 快速提供地图和火山学参数:通过多种遥感技术的整合对2021年埃特纳火山熔岩流进行量化

2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-13 DOI: 10.1007/s00445-023-01673-w

Cristina Proietti, Emanuela De Beni, Massimo Cantarero, Tullio Ricci, Gaetana Ganci

{"title":"Rapid provision of maps and volcanological parameters: quantification of the 2021 Etna volcano lava flows through the integration of multiple remote sensing techniques","authors":"Cristina Proietti, Emanuela De Beni, Massimo Cantarero, Tullio Ricci, Gaetana Ganci","doi":"10.1007/s00445-023-01673-w","DOIUrl":"https://doi.org/10.1007/s00445-023-01673-w","url":null,"abstract":"Abstract At active volcanoes recurring eruptive events, erosive processes and collapses modify the edifice morphology and impact monitoring and hazard mitigation. At Etna volcano (Italy) between February and October 2021, 57 paroxysmal events occurred from the South-East Crater (SEC), which is currently its most active summit crater. Strombolian activity and high lava fountains (up to 4 km) fed lava flows towards the east, south and south-west, and caused fallout of ballistics (greater than 1 m in diameter) within 1–2 km from the SEC. The impacted area does not include permanent infrastructure, but it is visited by thousands of tourists. Hence, we rapidly mapped each lava flow before deposits became covered by the next event, for hazard mitigation. The high frequency of the SEC paroxysms necessitated integration of data from three remote sensing platforms with different spatial resolutions. Satellite (Sentinel-2 MultiSpectral Instrument, PlanetScope, Skysat and Landsat-8 Operational Land Imager) and drone images (visible and thermal) were processed and integrated to extract digital surface models and orthomosaics. Thermal images acquired by a permanent network of cameras of the Istituto Nazionale di Geofisica e Vulcanologia were orthorectified using the latest available digital surface model. This multi-sensor analysis allowed compilation of a geodatabase reporting the main geometrical parameters for each lava flow. A posteriori analysis allowed quantification of bulk volumes for the lava flows and the SEC changes and of the dense rock equivalent volume of erupted magma. The analysis of drone-derived digital surface models enabled assessment of the ballistics’ distribution. The developed methodology enabled rapidly and accurate characterisation of frequently occurring effusive events for near real-time risk assessment and hazard communication.","PeriodicalId":55297,"journal":{"name":"Bulletin of Volcanology","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135742183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Spatio-temporal clustering of post-caldera eruptions at Yellowstone caldera: implications for volcanic hazards and pre-eruptive magma reservoir configuration 黄石火山口喷发后的时空聚类:对火山危险和喷发前岩浆储层构型的影响

2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-12 DOI: 10.1007/s00445-023-01665-w

Mark E. Stelten, Nicole Thomas, Anthony Pivarunas, Duane Champion

引用次数: 0

Effects of debris entrainment and recycling on explosive volcanic eruption jets and columns 碎屑夹带和再循环对爆炸性火山喷发射流和柱的影响

2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-12 DOI: 10.1007/s00445-023-01675-8

Greg A. Valentine

引用次数: 0

Pre-existing fractures and eruptive vent openings during the 2021 Fagradalsfjall eruption, Iceland 2021年冰岛Fagradalsfjall火山喷发期间存在的裂缝和喷发口

2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-12 DOI: 10.1007/s00445-023-01670-z

Ásta Rut Hjartardóttir, Tobias Dürig, Michelle Parks, Vincent Drouin, Vigfús Eyjólfsson, Hannah Reynolds, Páll Einarsson, Esther Hlíðar Jensen, Birgir Vilhelm Óskarsson, Joaquín M. C. Belart, Joël Ruch, Nils B. Gies, Gro B. M. Pedersen

引用次数: 2

The influence of volcano topographic changes on infrasound amplitude: lava fountains at Mt. Etna in 2021 火山地形变化对次声振幅的影响：2021年埃特纳火山的熔岩喷泉

IF 3.5 2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-09 DOI: 10.1007/s00445-023-01672-x

Adriana Iozzia, L. Watson, M. Cantarero, E. De Beni, G. Di Grazia, G. Ganci, Jeffrey B. Johnson, E. Privitera, Cristina Proietti, M. Sciotto, A. Cannata

引用次数: 0

Development of a volcanic risk management system at Mount St. Helens—1980 to present 圣海伦斯火山风险管理系统的开发——1980年至今

IF 3.5 2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-08 DOI: 10.1007/s00445-023-01663-y

Heather M. N. Wright, C. Driedger, J. Pallister, Christopher G. Newhall, M. Clynne, J. Ewert

引用次数: 1

U–Pb zircon age and chronology of the Torfufell central volcano: implications for timing of rift relocation in North Iceland Torfufell中央火山的U-Pb锆石年龄和年代学:对冰岛北部裂谷迁移时间的影响

IF 3.5 2区地球科学

Bulletin of Volcanology Pub Date : 2023-09-05 DOI: 10.1007/s00445-023-01667-8

S. Árnadóttir, T. Thordarson, Á. Hjartarson, B. Gautason

引用次数: 0