Fishing intensity OT CRU 2009 v2

This dataset describes fishing intensity for OT CRU mobile bottom contacting gear in 2009 based on VMS/Log book data processed by ICES Working Group on Spatial Fisheries Data (WGSFD). ICES secretariat collected during 2017 relevant VMS and logbook data for 2009-2016 to produce, as a technical service to HELCOM, updated spatial data layers on fishing intensity/pressure. Improved data quality control checks were implemented. Submitted data across the HELCOM area have improved in quality compared to previous data 2009-2013 published in 2015. Standardized methods were used to produce the requested data layers. The code used to create the data products is available here: https://github.com/ices-eg/wg_WGSFD For further technical information on the advice request, see http://www.ices.dk/sites/pub/Publication%20Reports/Advice/2017/Special_requests/helcom.2017.18.pdf HELCOM secretariat did the following processing to the shapefile provided by ICES: - Conversion to ETRS89LAEA coordinate system - Added feature and attribute "Reported" to display unreported areas. Dataset attribute information: c-square: Unique reference of the c-square polygon Year: Year of fishing activity mid_lat: latitude coordinate of the centroid of c-square inWGS84 decimal degrees mid_lon: longitude coordinate of the centroid of c-square inWGS84 decimal degrees SurfaceSAR: Surface area ratio (Swept area, < 2 cm penetration depth of the gear components) Subsurface: Subsurface area ratio (Swept area, subsurface =>2 cm penetration depth of the gear components) totweight: Total Weight (kg) totvalue: Total value (Euros) Kw Fishing Hours: (Kw*h) Fishing hours: (h) Reported: Yes=Reported data. No= No reported data (area that does not contain effort/intensity value due to lack of reported data). Please note that this dataset was updated (v2) in January 2019, see further details below in the lineage section.本数据集基于国际海洋考察理事会（International Council for the Exploration of the Sea, ICES）空间渔业数据工作组（Working Group on Spatial Fisheries Data, WGSFD）处理的船舶监控系统（Vessel Monitoring System, VMS）与航海日志数据，描述了2009年OT CRU移动底接触渔具的捕捞强度。 ICES秘书处于2017年收集了2009-2016年的相关VMS与航海日志数据，作为向波罗的海海洋环境保护委员会（Helsinki Commission, HELCOM）提供的技术服务，制作了更新后的捕捞强度/压力空间数据图层。本次工作实施了优化的数据质量管控核查流程，与2015年发布的2009-2013年历史数据相比，HELCOM海域内提交的本次数据质量有所提升。本次数据图层采用标准化方法制作，用于生成该数据集的代码可通过以下链接获取：https://github.com/ices-eg/wg_WGSFD。 如需获取关于本次咨询请求的更多技术信息，请参阅：http://www.ices.dk/sites/pub/Publication%20Reports/Advice/2017/Special_requests/helcom.2017.18.pdf。 HELCOM秘书处对ICES提供的Shapefile进行了如下处理： - 转换至ETRS89LAEA坐标系 - 添加名为“Reported”的要素与属性字段，用于标识未报告作业的区域。 数据集属性信息： - c-square：c-square多边形的唯一标识符 - 年份：捕捞活动所属年份 - mid_lat：c-square多边形质心的纬度坐标，采用WGS84十进制度格式 - mid_lon：c-square多边形质心的经度坐标，采用WGS84十进制度格式 - SurfaceSAR：表层面积占比（扫海面积，指渔具组件穿透深度小于2厘米的区域） - Subsurface：次表层面积占比（扫海面积，指渔具组件穿透深度大于等于2厘米的区域） - totweight：总重量（单位：千克） - totvalue：总价值（单位：欧元） - Kw Fishing Hours：千瓦小时（kW·h） - Fishing hours：捕捞时长（单位：小时） - Reported：“Yes”表示为已报告数据，“No”表示未报告数据（因缺乏上报数据，该区域无作业量/强度数值）。 请注意，本数据集于2019年1月更新至第二版，详情请参阅下文的数据谱系（lineage）部分。