美国康奈尔大学的Esteban Gazel,的研究小组近日取得一项新成果。经过不懈努力，他们在研究2021年拉帕尔马火山喷发期间的深层岩浆储存方面取得新成果。这一研究成果发表在2023年2月8日出版的国际学术期刊《科学进展》上。

该小组通过校准的拉曼光谱对橄榄石晶体中富含CO₂的流体包裹体(FIs)进行了密度测量，这些包裹体对压力高度敏感。这项技术可以彻底改变人们对持续喷发期间岩浆储存和运输的认识，因为只需少量的样品准备，它可以几乎实时地产生精确的岩浆储存深度限制。研究组的FIs记录的CO₂密度为0.73至0.98 g/cm³，处于报告的记录主要熔体存储储层的深地震带的位置，换算成深度为15至27公里。

据了解，2021年拉帕尔马火山爆发为测试地震震源和岩浆库位置之间的关系提供了前所未有的机会。

附：英文原文

Title: Deep magma storage during the 2021 La Palma eruption

Author: Kyle Dayton, Esteban Gazel, Penny Wieser, Valentin R. Troll, Juan Carlos Carracedo, Hector La Madrid, Diana C. Roman, Jamison Ward, Meritxell Aulinas, Harri Geiger, Frances M. Deegan, Guillem Gisbert, Francisco J. Perez-Torrado

Issue&Volume: 2023-02-08

Abstract: The 2021 La Palma eruption provided an unpreceded opportunity to test the relationship between earthquake hypocenters and the location of magma reservoirs. We performed density measurements on CO₂-rich fluid inclusions (FIs) hosted in olivine crystals that are highly sensitive to pressure via calibrated Raman spectroscopy. This technique can revolutionize our knowledge of magma storage and transport during an ongoing eruption, given that it can produce precise magma storage depth constraints in near real time with minimal sample preparation. Our FIs have CO₂ recorded densities from 0.73 to 0.98 g/cm³, translating into depths of 15 to 27 km, which falls within the reported deep seismic zone recording the main melt storage reservoir.

DOI: ade7641

Source: https://www.science.org/doi/10.1126/sciadv.ade7641