Bathymetry/depth measurements made at Long Fjord, Vestfold Hills by drilling through sea ice

Water depth measurements were taken in Long Fjord during early winter in 2007. The measurements were collected by Graham Cook, station leader at Davis Station in the Australian Antarctic Territory. The measurements were made by dropping a weighted line off the back of a quad bike, after drilling a hole through the sea ice. Measurements were made approximately every 100 metres.

The download file contains a csv spreadsheet which lists each waypoint, plus the corresponding water depth and any comments. The text file contains the waypoint information collected by the Garmin GPS unit. Data in the text file are comma separated and are interpreted as follows:

WP,D,001 (waypoint) , -68.51341000, 78.06903000,(Latitude and Longitude) 05/25/2007, 10:25:35, (Date and time Downloaded to Computer) 24-MAY-07 11:40:42 (Date and time of reading). Time is in local time.

Vegetation was found on the weight that we used when we first started at the seaward end of the Fjord and then again in shallow water between Brookes Hut and a small island 800 or 900 metres out from Brookes. The weight is quite smooth and does not pick up a lot.

The reference given below provides some further information about previously collected bathymetry data in Long Fjord. Furthermore, also see the metadata records:

'Bathymetric data of Long and Tryne Fjords at Vestfold Hills, Antarctica, collected in December 1999 [VH_bathy_99]'

'Interpolated bathymetry of Long and Tryne Fjords, Vestfold Hills, Antarctica [long_tryne_bathy]'

The fields in this dataset are:
Waypoint
Latitude
Longitude
Water Depth
Date
Time

2007年初冬，朗峡湾（Long Fjord）海域开展了水深测量工作，本次测量由澳大利亚南极领地戴维斯站（Davis Station）站长格雷厄姆·库克（Graham Cook）负责实施。测量流程为：先在海冰上钻取孔洞，随后将系有重物的绳索从全地形四轮车（quad bike）尾部投入水中，测点间距约为100米。

本次提供的下载文件包含一份CSV格式电子表格，其中逐条记录了各航点（waypoint）对应的水深数据及相关备注。另有一份文本文件，存储了佳明GPS（Garmin GPS）采集的航点信息，该文件采用逗号分隔格式，各字段及含义如下：航点编号、纬度、经度、数据下载至计算机的日期与时间、实测数据采集时间。示例条目为：WP,D,001, -68.51341000, 78.06903000, 2007年5月25日 10:25:35, 2007年5月24日 11:40:42。所有时间均采用当地时间。

测量初始阶段，在峡湾向海端使用的重物表面发现附着植被；此外在布鲁克斯小屋（Brookes Hut）至距其约800至900米处的小型岛屿之间的浅水区，该重物表面同样发现了附着植被。该重物表面较为光滑，附着的植被量较少。

以下参考资料提供了朗峡湾此前采集的水深地形（bathymetry）数据的更多相关信息，另可参阅以下元数据（metadata）记录：
《1999年12月于南极洲韦斯特福尔丘陵（Vestfold Hills）地区朗峡湾与特赖恩峡湾（Tryne Fjord）采集的水深地形数据》[VH_bathy_99]
《南极洲韦斯特福尔丘陵地区朗峡湾与特赖恩峡湾插值水深地形数据》[long_tryne_bathy]

本数据集包含以下字段：航点（Waypoint）、纬度（Latitude）、经度（Longitude）、水深（Water Depth）、日期（Date）、时间（Time）