Summit eruption of Kilauea Volcano: a unique opportunity to test magma degassing models using new spectroscopic methods.

我们正在申请紧急拨款，以应对2008年3月开始的基拉韦厄火山喷发。我们希望利用这一独特的机会来验证自1924年以来从未发生过的山顶喷发所提供的脱气模型。2008年3月中旬，火山活动开始，火山气体排放量增加了4倍。随后，在山顶破火山口发生了两次爆炸，最后一次与少年贝利的头发和眼泪的喷发有关，再加上高气体通量，标志着浅层岩浆的存在。目前（2008年3月31日）有一个充满灰尘的羽状物从爆炸坑中脱气，火山气体排放量很高。夏威夷火山观测站的资源和人力有限;我们希望补充和大大提高他们的能力，以各种技术测量山顶羽流的火山气体，我们的小组在这方面具有独特的资格和装备。我们请求提供资金，以便在2008年4月/5月尽快开展实地工作，使用各种技术，包括傅里叶变换红外光谱仪、化学传感器和差分吸收光谱仪，测量气体成分和流量。通过这项研究获得的气体成分和通量将允许评价岩浆喷发前的挥发物含量，评估通过山顶岩浆房和裂谷的岩浆路径，并改进对地面变形和其他监测数据的解释。

We are applying for an urgency grant to respond to the summit eruption of Kilauea that has begun in March 2008. We wish to take the unique opportunity to validate degassing models offered by a summit eruption, which has not occurred since 1924. Activity at the summit began in mid-March 2008, when volcanic gas emissions increased 4-fold. Subsequently, there have been two explosions at the summit caldera, the last associated with the eruption of juvenile Pele's hair and tears, which, combined with the high gas flux, signals the presence of magma at shallow levels. At the present time (31 March 2008) there is an ash-laden plume degassing from the explosion crater, with high emissions of volcanic gases. The Hawaiian Volcano Observatory have limited resources and manpower; we wish to supplement and greatly augment their capability to measure volcanic gases from the summit plume with a variety of techniques, for which our group is uniquely qualified and equipped. We request funds to carry out fieldwork as soon as possible in April/May 2008 with a variety of techniques, including FTIR, chemical sensors and DOAS, to measure gas composition and flux. The gas compositions and fluxes obtained by this study will allow evaluation of the pre-eruptive volatile content of the magma, assessment of magma pathways through the summit magma chamber and rift, and an improved interpretation of ground deformation and other monitoring data.