Magmatism in subduction zones builds continental crust and causes most of Earth's subaerial volcanism. The production rate and composition of magmas are controlled by the thermal structure of subduction zones. A range of geochemical and heat flow evidence has recently converged to indicate that subduction zones are hotter at lithospheric depths beneath the arc than predicted by canonical thermomechanical models, which neglect magmatism. We show that this discrepancy can be resolved by consideration of the heat transported by magma. In our one- and two-dimensional numerical models and scaling analysis, magmatic transport of sensible and latent heat locally alters the thermal structure of canonical models by $\sim$300 K, increasing predicted surface heat flow and mid-lithospheric temperatures to observed values. We find the advection of sensible heat to be larger than the deposition of latent heat. Based on these results we conclude that thermal transport by magma migration affects the chemistry and the location of arc volcanoes.
Interactions between syn-rift magmatism and tectonic extension at intermediate rifted margins
Marum - Center for Marine Environmental Sciences, Bremen Universität(不来梅大学海洋环境科学中心);School of Geography and Ocean Science, Collaborative Innovation Center of South China Sea Studies, Nanjing University(南京大学地理与海洋科学学院,南海研究协同创新中心)
A systematic search for tectonic tremor and low-frequency earthquakes in the Atacama segment of the Chilean subduction zone (24$^\circ$S-31$^\circ$S) turns up empty
Quantification of bound water content, interstitial porosity and fracture porosity in the sediments entering the North Sumatra subduction zone from Cation Exchange Capacity and IODP Expedition 362 resistivity data
Real-time Bayesian inference at extreme scale: A digital twin for tsunami early warning applied to the Cascadia subduction zone
Oden Institute The University of Texas at Austin(德克萨斯大学奥斯汀分校奥登研究所);Center for Applied Scientific Computing Lawrence Livermore National Laboratory(劳伦斯利弗莫尔国家实验室应用科学计算中心);Scripps Institution of Oceanography University of California San Diego(加州大学圣地亚哥分校斯克里普斯海洋研究所);Oden Institute, Walker Department of Mechanical Engineering The University of Texas at Austin(德克萨斯大学奥斯汀分校奥登研究所沃克机械工程系)
Rapid Earthquake-to-Tsunami Waveform Generation via Large-Scale Multi-GPU FFT Convolution Applied to the Cascadia Subduction Zone
Oden Institute for Computational Engineering;Sciences The University of Texas at Austin Austin, TX, USA;Sciences, Walker Department of Mechanical Engineering The University of Texas at Austin Austin, TX, USA
A Framework for Modeling Liquefaction-Induced Road Disruptions After Earthquakes: Implications for Emergency Response and Access in the Cascadia Region of North America
Dept. of Civil and Environmental Engineering, University of Washington(华盛顿大学土木与环境工程系);Dept. of Civil and Environmental Engineering, University of Auckland(奥克兰大学土木与环境工程系)