A comparison of black smoker hydrothermal plume behavior at Monolith Vent and at Clam Acres Vent Field: Dependence on source configuration
A comparison of black smoker hydrothermal plume behavior at Monolith Vent and at Clam Acres Vent Field: Dependence on source configuration
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Monolith Vent 和 Clam Acres Vent Field 黑烟热液羽流行为的比较：对源配置的依赖性
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
K. Mitsuzawa
中科院分区：
文献类型：
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作者：
K. Bemis;P. Rona;D. Jackson;C. Jones;D. Silver;K. Mitsuzawa
声学图像的定量可视化是用来比较的性质和行为的高温热液羽在两个站点与不同的源配置，增加我们的理解如何羽行为反映源配置。声学成像实验在西南喷口区的Clam Acres地区、东太平洋海隆北纬21°和Juan de Fuca海岭北裂段的Monolith喷口进行。在蛤蜊英亩，黑烟排放从两个相邻的烟囱作为点源，而多个通风口在巨石通风口定义了一个分布式椭圆源。这两个羽流表现出一致的稀释模式，合理的拟合预期的幂律增加中心线稀释与高度，和简单的弯曲羽流中心线响应环境电流。我们的数据表明，点源喷口与有序的羽流结构、正常的夹带率和等值面的初始膨胀有关，而分布式源喷口与无序的羽流结构、可变的夹带率和等值面的初始收缩有关。
Quantitative visualization of acoustic images is used to compare the properties and behavior of high temperature hydrothermal plumes at two sites with different source configurations, increasing our understanding of how plume behavior reflects source configuration. Acoustic imaging experiments were conducted at the Clam Acres area of the Southwest Vent Field, 21° N East Pacific Rise and at Monolith Vent, North Cleft segment, Juan de Fuca Ridge. At Clam Acres, black smokers discharge from two adjacent chimneys which act as point sources, whereas multiple vents at Monolith Vent define a distributed elliptical source. Both plumes exhibit consistent dilution patterns, reasonable fits to the expected power law increase in centerline dilution with height, and simple bending of plume centerlines in response to ambient currents. Our data suggest that point source vents are associated with ordered plume structure, normal entrainment rates, and initial expansion of isosurfaces while distributed source vents are associated with disorganized plume structure, variable entrainment rates, and initial contraction of isosurfaces.