Magdalena Oryaëlle Chevrel, Nicolas Villeneuve, Raphaël Grandin, Jean-Luc Froger, Diego Coppola, Francesco Massimetti, Adele Campus, Alexis Hrysiewicz, Aline Peltier
{"title":"Lava flow daily monitoring: the case of the 19 September–5 October 2022 eruption at Piton de la Fournaise","authors":"Magdalena Oryaëlle Chevrel, Nicolas Villeneuve, Raphaël Grandin, Jean-Luc Froger, Diego Coppola, Francesco Massimetti, Adele Campus, Alexis Hrysiewicz, Aline Peltier","doi":"10.30909/vol.06.02.391404","DOIUrl":null,"url":null,"abstract":"Taking prompt and effective actions to mitigate risks associated with an effusive eruption greatly depends on the monitoring of lava flow emplacement. Here we report on the monitoring of the lava flow emplaced during the 19 September to 05 October 2022 eruption at Piton de la Fournaise (La Réunion) that involves an unprecedentedly large data set acquired using multiple techniques and sensors. These include aerial photogrammetry to construct digital surface models and define lava flow geometry during and after emplacement. Complementary use of multiple satellite sensors (visible, infrared, and radar) allowed lava flow field contour definition and an estimation of time-averaged discharge rate with daily frequency. Evolution of the eruptive cone morphology was also monitored through aerial photogrammetry and radar multi-viewing angle imagery. This combination of data obtained from several institutes and using various techniques—from ground, air and space—allowed detailed tracking of lava flow advance and serves as an example for future eruptions at Piton de La Fournaise and at other active volcanic sites.","PeriodicalId":33053,"journal":{"name":"Volcanica","volume":"124 1","pages":"0"},"PeriodicalIF":2.5000,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Volcanica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.30909/vol.06.02.391404","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}
引用次数: 0
Abstract
Taking prompt and effective actions to mitigate risks associated with an effusive eruption greatly depends on the monitoring of lava flow emplacement. Here we report on the monitoring of the lava flow emplaced during the 19 September to 05 October 2022 eruption at Piton de la Fournaise (La Réunion) that involves an unprecedentedly large data set acquired using multiple techniques and sensors. These include aerial photogrammetry to construct digital surface models and define lava flow geometry during and after emplacement. Complementary use of multiple satellite sensors (visible, infrared, and radar) allowed lava flow field contour definition and an estimation of time-averaged discharge rate with daily frequency. Evolution of the eruptive cone morphology was also monitored through aerial photogrammetry and radar multi-viewing angle imagery. This combination of data obtained from several institutes and using various techniques—from ground, air and space—allowed detailed tracking of lava flow advance and serves as an example for future eruptions at Piton de La Fournaise and at other active volcanic sites.
熔岩流每日监测:以2022年9月19日至10月5日在Piton de la Fournaise火山喷发为例
采取迅速和有效的行动以减轻与喷涌喷发有关的风险在很大程度上取决于对熔岩流就位的监测。在这里,我们报告了2022年9月19日至10月5日在Piton de la Fournaise (la r union)火山喷发期间的熔岩流监测,其中涉及使用多种技术和传感器获得的前所未有的大数据集。其中包括航空摄影测量,以构建数字表面模型,并定义就位期间和之后的熔岩流几何形状。补充使用多个卫星传感器(可见光、红外线和雷达),可以定义熔岩流场轮廓,并估计每日频率的时间平均放电率。通过航空摄影测量和雷达多视角成像监测了火山喷发锥形态的演变。这些数据来自几个研究所,使用了各种技术——从地面、空中和太空——可以详细跟踪熔岩流动的进展,并为福尔奈斯峰和其他活火山的未来喷发提供了一个例子。