Heat flow in the Lesser Antilles island arc and adjacent back arc Grenada basin
Heat flow in the Lesser Antilles island arc and adjacent back arc Grenada basin
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DOI：
10.1029/2012gc004260
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发表时间：
2012-08
期刊：
影响因子：
3.7
通讯作者：
M. Manga;M. Hornbach;A. Le Friant;O. Ishizuka;N. Stroncik;T. Adachi;M. Aljahdali;G. Boudon;C. Breitkreuz;A. Fraass;A. Fujinawa;R. Hatfield;M. Jutzeler;K. Kataoka;S. Lafuerza;F. Maeno;M. Martínez-Colón;M. McCanta;S. Morgan;M. Palmer;T. Saito;A. Slagle;A. Stinton;K. Subramanyam;Y. Tamura;P. Talling;B. Villemant;D. Wall-Palmer;Fei Wang
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文献类型：
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作者：
M. Manga;M. Hornbach;A. Le Friant;O. Ishizuka;N. Stroncik;T. Adachi;M. Aljahdali;G. Boudon;C. Breitkreuz;A. Fraass;A. Fujinawa;R. Hatfield;M. Jutzeler;K. Kataoka;S. Lafuerza;F. Maeno;M. Martínez-Colón;M. McCanta;S. Morgan;M. Palmer;T. Saito;A. Slagle;A. Stinton;K. Subramanyam;Y. Tamura;P. Talling;B. Villemant;D. Wall-Palmer;Fei Wang
利用在6个地点测量的10个孔的温度梯度，我们通过集成海洋钻探计划（Integrated Ocean Drilling Program）在小安的列斯群岛北部和中部以及格林纳达盆地弧后的钻孔，获得了第一个高保真的热流测量结果。在校正了测深和沉降效应后，隐含的热流范围从位于蒙特塞拉特火山岛和瓜德罗普火山岛之间的弧顶约0.1 W/m2，到弧后方向距离波峰15公里处。结合以往的测量结果，我们发现热流的大小和空间分布与大陆弧相似。格林纳达盆地向活动弧以西的热流为0.06 W/m2，比之前和最近的研究结果低2倍。在这些地点都没有明显的浅层流体平流的热证据。现今的火山活动仅限于热流最高的地区。
Using temperature gradients measured in 10 holes at 6 sites, we generate the first high fidelity heat flow measurements from Integrated Ocean Drilling Program drill holes across the northern and central Lesser Antilles arc and back arc Grenada basin. The implied heat flow, after correcting for bathymetry and sedimentation effects, ranges from about 0.1 W/m2 on the crest of the arc, midway between the volcanic islands of Montserrat and Guadeloupe, to 15 km from the crest in the back arc direction. Combined with previous measurements, we find that the magnitude and spatial pattern of heat flow are similar to those at continental arcs. The heat flow in the Grenada basin to the west of the active arc is 0.06 W/m2, a factor of 2 lower than that found in the previous and most recent study. There is no thermal evidence for significant shallow fluid advection at any of these sites. Present‐day volcanism is confined to the region with the highest heat flow.