Time Dependent Changes in Very Young Oceanic Crust

[505514]在1993年10月的一次快速反应巡航中，主要研究人员对胡安·德·富卡山脊上新喷发的水流和邻近地区进行了初步的磁场、重力和岩石取样。建议继续对新熔岩流进行时间序列调查，1994年进行12次阿尔文潜水，1995年进行6次潜水。该项目将：(1)在新流上重复1993年的测量线，(2)重新测量流体喷口以确定冷却速率，(3)对熔岩流和岩脉区域进行完整的磁力和重力测量，(4)在新喷发的流区域放置底部磁力计以确定冷却/蚀变速率，(5)对返回的岩石样本进行实验室实验。* * *

9505514 Tivey During a rapid-response cruise in October 1993 the principal investigators conducted preliminary magnetic, gravity, and rock sampling of the newly erupted flow and adjacent regions on the Juan de Fuca ridge. A continuation of the time-series investigation of the new lava flow is proposed with 12 ALVIN dives in 1994 and six dives in 1995. This project would: (1) repeat the 1993 survey lines over the new flow, (2) remeasure the fluid vents to establish a cooling rate, (3) conduct a complete magnetic and gravity survey of the lava flow and dike area, (4) place bottom magnetometers on the newly erupted flow area to determine the cooling/alteration rates, and (5) conduct laboratory experiments on the returned rock samples. ***