PACMANUS 4 Geoscientific Data 1997

This dataset contains geoscientific data logged during PACMANUS 4 (FR09/97) on RV Franklin 8.10-3.11.1997 in Manus Basin, Papua New Guinea. These data include logged station coordinates and information for sediment grabs and cores, CTD/hydrocast operations and samples, camera/video tows and footage, bathymetric surveys and geological and fauna samples. The principal aims of PACMANUS IV (FR09/97) were to conduct further studies of seafloor hydrothermal activity at the PACMANUS and SuSu Knolls sites defined by cruises FR-08/91,FR-05/93 and FR-10/96 in the eastern Manus Basin, Bismarck Sea, and to test other volcanic edifices in the vicinity for hydrothermal activity. With only about 8 hours lost through equipment malfunction, during 12 days 10 hours on station we conducted 36 dredges, 18 grabs, 10 sediment cores, 14 hydrocasts and tow-yos, 15 camera-video tows, and 4 deployments of a vent fluid sampler. Twelve echosounder profiles with specific geological objectives were collected, partly during transit, and 59 operations plans involving 272 way-points were issued. A total of 207 km of cable was hauled, and a distance of 3100 miles sailed.

本数据集涵盖1997年10月8日至11月3日期间，在巴布亚新几内亚（Papua New Guinea）马努斯盆地（Manus Basin）搭乘富兰克林号科考船（RV Franklin）执行PACMANUS 4（FR09/97）航次时采集的地球科学实测数据。此类数据包含实测站位坐标、沉积物抓取采样（sediment grab）与岩芯的相关信息、温盐深剖面仪（CTD）/水文剖面观测（hydrocast）作业及样品、摄像/视频拖曳作业与影像资料、水深测量（bathymetric survey）数据，以及地质与生物群落（fauna）样品信息。PACMANUS IV（FR09/97）航次的核心目标为两项：一是对此前由FR-08/91、FR-05/93及FR-10/96航次在俾斯麦海（Bismarck Sea）马努斯盆地东部划定的PACMANUS与苏苏海山（SuSu Knolls）热液活动位点开展进一步研究；二是对周边其他火山构造（volcanic edifice）开展热液活动探测。本次航次累计在站位作业12天10小时，仅因设备故障延误约8小时，期间完成36次耙网采样、18次沉积物抓取采样、10次沉积物岩芯取样、14次温盐深剖面与拖曳式剖面（tow-yos）观测、15次摄像-视频拖曳作业，以及4次喷口流体取样器（vent fluid sampler）部署。此外，还采集了12条针对特定地质目标的回声测深（echosounder）剖面，部分作业在航渡期间完成；累计发布59份作业方案，涉及272个航点。本次航次共收放缆绳总长207千米，累计航行里程达3100海里。