Heat Flow and Near‐Seafloor Magnetic Anomalies Highlight Hydrothermal Circulation at Brothers Volcano Caldera, Southern Kermadec Arc, New Zealand
Heat Flow and Near‐Seafloor Magnetic Anomalies Highlight Hydrothermal Circulation at Brothers Volcano Caldera, Southern Kermadec Arc, New Zealand
复制标题
热流和近海底磁异常凸显了新西兰南克马德克弧兄弟火山口的热液循环
DOI：
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发表时间：
2019
影响因子：
5.2
通讯作者：
S. Humphris
中科院分区：
文献类型：
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作者：
F. Caratori Tontini;M. Tivey;C. D. Ronde;S. Humphris
兄弟火山是克马德克弧沿线热液最活跃的火山，在火山口壁上和崩塌后的火山锥上有明显的热液区。这些地点在温度、气体含量、流体化学和相关矿化方面显示出非常不同的热液活动类型。在这里，我们展示了系统热流调查的结果，结合了使用远程操作车辆和自主水下航行器获得的近海底磁数据。大规模的环流在结构上受到控制，通过火山口底部的深层（~1 ~ 2公里深度）中央补给以及沿火山口壁和崩塌后锥顶的侧向排放。浅层（~ 0.1 ~ 0.2 km深度）环流的特点是在距离活火山口~ 0.1 ~ 0.2 km处有小规模补给带。
Brothers volcano is the most hydrothermally active volcano along the Kermadec arc, with distinct hydrothermal fields located on the caldera walls and on the postcollapse volcanic cones. These sites display very different styles of hydrothermal activity in terms of temperature, gas content, fluid chemistry, and associated mineralization. Here we show the results of a systematic heat flow survey integrated with near‐seafloor magnetic data acquired using remotely operated vehicles and autonomous underwater vehicles. Large‐scale circulation is structurally controlled, with a deep (~1‐ to 2‐km depth) central recharge through the caldera floor and lateral discharge along the caldera walls and at the summits of the postcollapse cones. Shallow (~ 0.1‐0.2 km depth) circulation is characterized by small‐scale recharge zones located at a distance of ~ 0.1–0.2 km from the active vent sites.
影响因子：
5.8
作者：
de Ronde, Cornel E. J.;Humphris, Susan E.;Reyes, Agnes G.
通讯作者：
Reyes, Agnes G.