PIFSC, Cetacean Survey, MACS 2015, Cruise 1502, NOAA Pacific Islands Fisheries Science Center

Original provider: NOAA Pacific Islands Fisheries Science Center (PIFSC) Dataset credits: NOAA Pacific Islands Fisheries Science Center Abstract: The Mariana Archipelago Cetacean Survey (MACS) was a shipboard line-transect survey within 50 nmi of the Mariana Islands within the Guam and CNMI exclusive economic zone (8 May - 6 June 2015). Three days were lost to diversion out of the study area due to Typhoon Dolphin. All regions of the study area were at least partially surveyed as planned, with some gaps in transect survey coverage due to the weather diversion. There were 42 cetacean sightings that included 9 identified species, as well as groups of dolphins, whales, and beaked whales that could not be identified to species. Supplemental information: Data were collected under NMFS permit 15240. The data included here are the sightings and on-effort tracks recorded within WinCruz survey software and extracted from the QA/QC'd DAS file using the R package swfscDAS (https://smwoodman.github.io/swfscDAS). Attributes for fields within the trackline files: Cruise - see description in attribute table below segnum - segment number for continuous on-effort line Date - Local date m/dd/yyyy TimeStart - Local time at start of on-effort segment LatStart - Latitude in decimal degrees at starting point of on-effort segment LongStart - Longitude in decimal degrees at starting point of on-effort segment TimeEnd - Local time at end of on-effort segment LatEnd - Latitude in decimal degrees at end point of on-effort segment LongEnd - Longitude in decimal degrees at end point of on-effort segment Mode - see description in attribute table below EffType - see description in attribute table below avgSpdKt - average speed (knots) of the ship over the on-effort segment traveled avgBft - average Beaufort Sea State over the on-effort segment Other data not included here: Photos and biopsy samples were collected and satellite tags were deployed during some sightings. Acoustic detections were recorded from a towed hydrophone array. Sonobuoys were deployed opportunistically. High-frequency Acoustic Recording Packages (HARP) were recovered and redeployed off Saipan and Tinian and deployed off Pagan. Oceanographic data were collected (CTD, XBT).

原始提供方：美国国家海洋和大气管理局太平洋岛屿渔业科学中心（NOAA Pacific Islands Fisheries Science Center, PIFSC）。数据集致谢：美国国家海洋和大气管理局太平洋岛屿渔业科学中心。

摘要：马里亚纳群岛鲸类调查（Mariana Archipelago Cetacean Survey, MACS）是2015年5月8日至6月6日期间，在关岛及北马里亚纳群岛专属经济区内、距马里亚纳群岛50海里范围内开展的船舶搭载航线样线调查。因台风“海豚”导致3天偏离研究区域，造成作业延误。研究区域所有分区均按计划完成了至少部分覆盖，但受天气偏离影响，航线样线调查存在部分空白。本次调查共记录到42次鲸类目击事件，涉及9个已鉴定物种，以及无法鉴定至物种级别的海豚群、鲸群和喙鲸群。

补充说明：本数据基于美国国家海洋渔业局（National Marine Fisheries Service, NMFS）许可15240号采集。本次公开的数据为WinCruz调查软件记录的目击事件与有效作业航迹，通过R语言包swfscDAS从经过质量控制与质量保证（QA/QC）的DAS文件中提取（https://smwoodman.github.io/swfscDAS）。航迹文件内字段属性说明如下：
Cruise：详见下文属性表描述
segnum：连续有效作业航段的段编号
Date：本地日期，格式为月/日/年
TimeStart：有效作业航段开始时的本地时间
LatStart：有效作业航段起点的纬度，单位为十进制度
LongStart：有效作业航段起点的经度，单位为十进制度
TimeEnd：有效作业航段结束时的本地时间
LatEnd：有效作业航段终点的纬度，单位为十进制度
LongEnd：有效作业航段终点的经度，单位为十进制度
Mode：详见下文属性表描述
EffType：详见下文属性表描述
avgSpdKt：有效作业航段内船舶的平均航速，单位为节
avgBft：有效作业航段内的平均蒲福海况等级

未包含的其他数据：部分目击事件中采集了照片和皮肤活检样本，并部署了卫星标签；拖曳式水听器阵列记录了声学探测数据；临时部署了声呐浮标；在塞班岛、天宁岛附近回收并重新部署了高频声学记录包（High-frequency Acoustic Recording Packages, HARP），并在帕甘岛部署了该设备；采集了海洋学数据（温盐深剖面仪CTD、抛投式温盐深剖面仪XBT）。