Twenty Years of Thermal Infrared Observations (2004–2024) at Campi Flegrei Caldera (Italy) by the Permanent Surveillance Ground Network of INGV-Osservatorio Vesuviano

IF 4.2 2区 地球科学 Q2 ENVIRONMENTAL SCIENCES
Remote Sensing Pub Date : 2024-09-09 DOI:10.3390/rs16173352
Fabio Sansivero, Giuseppe Vilardo
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Abstract

Thermal infrared (TIR) time series images acquired by ground, proximal TIR stations provide valuable data to study evolution of surface temperature fields of diffuse degassing volcanic areas. This paper presents data processing results related to TIR images acquired since 2004 by six ground stations in the permanent thermal infrared surveillance network at Campi Flegrei (TIRNet) set up by INGV-Osservatorio Vesuviano. These results are reported as surface temperature and heat flux time series. The processing methodologies, also discussed in this paper, allow for presentation of the raw TIR image data in a more comprehensible form, suitable for comparisons with other geophysical parameters. A preliminary comparison between different trends in the surface temperature and heat flux values recorded by the TIRNet stations provides evidence of peculiar changes corresponding to periods of intense seismicity at the Campi Flegrei caldera. During periods characterized by modest seismicity, no remarkable evidence of common temperature variations was recorded by the different TIRNet stations. Conversely, almost all the TIRNet stations exhibited common temperature variations, even on a small scale, during periods of significant seismic activity. The comparison between the seismicity and the variations in the surface temperature and heat flux trends suggests an increase in efficiency of heat transfer between the magmatic system and the surface when an increase in seismic activity was registered. This evidence recommends a deeper, multidisciplinary study of this correlation to improve understanding of the volcanic processes affecting the Campi Flegrei caldera.
意大利坎皮弗莱格雷火山口INGV-Osservatorio Vesuviano常设地面监测网二十年(2004-2024年)热红外观测结果
地面近距离热红外站获取的热红外时间序列图像为研究弥漫性脱气火山区地表温度场的演变提供了宝贵的数据。本文介绍了由维苏威观测站(INGV-Osservatorio Vesuviano)在坎皮弗莱格雷建立的永久性热红外监测网(TIRNet)中的六个地面站自 2004 年以来获取的 TIR 图像的相关数据处理结果。这些结果以地表温度和热通量时间序列的形式报告。本文还讨论了处理方法,可以将原始红外图像数据以更易于理解的形式呈现,适合与其他地球物理参数进行比较。通过对 TIRNet 站记录的地表温度和热通量值的不同趋势进行初步比较,可以发现坎皮弗莱格雷火山口发生强烈地震时,地表温度和热通量值会发生特殊变化。在地震活动较少的时期,不同的 TIRNet 台站没有记录到明显的共同温度变化证据。相反,在地震活动频繁的时期,几乎所有 TIRNet 台站都出现了共同的温度变化,即使是小范围的变化。地震活动与地表温度和热通量变化趋势之间的比较表明,当地震活动增加时,岩浆系统与地表之间的热传导效率提高。这一证据建议对这一相关性进行更深入的多学科研究,以增进对影响坎皮弗莱格雷火山口的火山过程的了解。
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来源期刊
Remote Sensing
Remote Sensing REMOTE SENSING-
CiteScore
8.30
自引率
24.00%
发文量
5435
审稿时长
20.66 days
期刊介绍: Remote Sensing (ISSN 2072-4292) publishes regular research papers, reviews, letters and communications covering all aspects of the remote sensing process, from instrument design and signal processing to the retrieval of geophysical parameters and their application in geosciences. Our aim is to encourage scientists to publish experimental, theoretical and computational results in as much detail as possible so that results can be easily reproduced. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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