A large hydrothermal reservoir beneath Taal Volcano (Philippines) revealed by magnetotelluric observations and its implications to the volcanic activity
| العنوان: | A large hydrothermal reservoir beneath Taal Volcano (Philippines) revealed by magnetotelluric observations and its implications to the volcanic activity |
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| المؤلفون: | Yoshihiro Okada, Toshiyasu Nagao, Paul Alanis, Akihiro Takeuchi, Yusuke Yamaya, Yoichi Sasai |
| المصدر: | Proceedings of the Japan Academy. Series B, Physical and Biological Sciences |
| بيانات النشر: | Japan Academy, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Lateral eruption, Philippines, General Physics and Astronomy, Poison control, Volcanic Eruptions, hydrothermal reservoir, History, 18th Century, Taal Volcano, Hydrothermal circulation, Hydrothermal Vents, Impact crater, magmatic-hydrothermal eruptions, Magnetotellurics, resistivity structure, Petrology, geography, geography.geographical_feature_category, Geography, Magnetic Phenomena, General Medicine, History, 20th Century, Volcano, History, 16th Century, Magma, magnetotellurics, Original Article, General Agricultural and Biological Sciences, Geology, Seismology, Hydrothermal vent |
| الوصف: | (Communicated by Seiya UYEDA, M.J.A.) Abstract: Taal Volcano is one of the most active volcanoes in the Philippines. The magnetotelluric 3D forward analyses indicate the existence of a large high resistivity anomaly (9100+·m) with a volume of at least 3km # 3km# 3km, which is capped by a conductive layer (910+·m), beneath the Main Crater. This high resistivity anomaly is hypothesized to be a large hydrothermal reservoir, consisting of the aggregate of interconnected cracks in rigid and dense host rocks, which are filled with hydrothermal fluids coming from a magma batch below the reservoir. The hydrothermal fluids are considered partly in gas phase and liquid phase. The presence of such a large hydrothermal reservoir and the stagnant magma below may have influences on the volcano's activity. Two possibilities are presented. First, the 30 January 1911 explosion event was a magmatic hydrothermal eruption rather than a base-surge associated with a phreato-magmatic eruption. Second, the earlier proposed four eruption series may be better interpreted by two cycles, each consisting of series of summit and flank eruptions. |
| تدمد: | 1349-2896 0386-2208 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68e70514424fe48920ad26c00be9d325 https://doi.org/10.2183/pjab.89.383 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....68e70514424fe48920ad26c00be9d325 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13492896 03862208 |
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