Fishing effort all gear types third quarter 2013

This dataset describes fishing effort (hours/c-square) for all gear types in third quarter of 2013 based on VMS/Log book data processed by ICES Working Group on Spatial Fisheries Data (WGSFD). HELCOM requires spatially explicit information on fishing activity affecting the Baltic Sea marine ecosystem for policy purposes. In order to obtain this information a joint ICES/HELCOM/OSPAR data call was issued to relevant authorities of contracting parties to deliver information on fishing activity based on VMS/Log book data. The raw data was submitted to ICES and processed to advice data products by ICES Working Group for Spatial Fisheries (WGSFD) as requested by HELCOM. Processing of the raw data requires specific resources, knowledge and guarantee of anonymity for specific vessels, thus the process was done by ICES WGSFD following Conditions for VMS data use. In 2015 ICES collated Vessel Monitoring System (VMS) and logbook data received; data from Russia were not received. ICES provided to HELCOM advice as fishing abrasion pressure maps as well as fishing effort maps. HELCOM secretariat did the following processing to the data: - 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 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 Year: Year of fishing activity quarter: Quarter of the year, if applicable geargroup: Fishing gear group (Effort maps) SubsurfSAR: Subsurface swept area ratio (Intensity maps) SurfSAR: Surface swept area ratio (Intensity maps) Fishing_ho: Total fishing effort in hours within c-square (Effort maps) Reported: Yes=Reported data. No= No reported data (area that does not contain effort/intensity value due to lack of reported data.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）处理的船舶监测系统（Vessel Monitoring System）与捕捞日志数据，呈现了2013年第三季度所有渔具类型的捕捞努力量（单位：小时/每c-square网格单元）。 波罗的海海洋环境保护委员会（Helsinki Commission，HELCOM）出于政策制定需求，需获取针对波罗的海海洋生态系统的空间显式捕捞活动信息。为此，ICES、HELCOM与东北大西洋海洋环境保护委员会（OSPAR Commission）联合向各缔约方主管部门发出数据征集请求，要求提交基于船舶监测系统/捕捞日志数据的捕捞活动信息。原始数据提交至ICES后，由ICES空间渔业数据工作组按照HELCOM的要求处理为咨询类数据产品。原始数据的处理需动用特定资源、具备专业知识，且需保障特定船舶的匿名性，因此该项工作由ICES WGSFD依据《船舶监测系统数据使用规范》完成。2015年，ICES汇总了收到的船舶监测系统与日志数据，但未获取到俄罗斯提交的数据。ICES向HELCOM提交了捕捞侵蚀压力分布图与捕捞努力量分布图作为咨询成果。 HELCOM秘书处对数据开展了如下处理： - 转换至ETRS89LAEA坐标系 - 添加"Reported"（已报告）要素与属性字段，用于标识未报告区域。 数据集属性说明如下： c-square：c-square多边形的唯一标识 mid_lat：c-square质心的纬度坐标，采用WGS84十进制度格式 mid_lon：c-square质心的经度坐标，采用WGS84十进制度格式 Year：捕捞活动所属年份 quarter：捕捞活动所属季度（如适用） geargroup：渔具组（对应努力量分布图） SubsurfSAR：水下扫海面积比（对应强度分布图） SurfSAR：水面扫海面积比（对应强度分布图） Fishing_ho：单c-square网格内的总捕捞努力量（单位：小时，对应努力量分布图） Reported：字段取值为“Yes”代表已报告数据，取值为“No”代表未报告数据（即因缺乏上报数据而无对应努力量或强度值的区域）