根据2006年1-6月中国鱿钓船在西南大西洋的生产统计和表面水温（SST）、海面高度距平值（SSHA）的资料，利用海洋地理信息系统软件Marine explorer 4．0绘制了各月产量、日产量与SST和SSHA的关系图，推测出各月渔场的最适SST和SSHA值，...根据2006年1-6月中国鱿钓船在西南大西洋的生产统计和表面水温（SST）、海面高度距平值（SSHA）的资料，利用海洋地理信息系统软件Marine explorer 4．0绘制了各月产量、日产量与SST和SSHA的关系图，推测出各月渔场的最适SST和SSHA值，并经K-S检验。结果表明：1—3月中心渔场主要分布在45°S、60°W附近海域，各月最适SST分别为11～12℃、12～13℃、12～13℃；4-6月中心渔场主要分布在42°S、58°W附近海域，各月最适SST分别为11～13℃、9～11℃、8～9℃。中心渔场主要分布在SSHA=0附近海域。中心渔场分布与SST和SSHA关系极为密切，可作为渔情分析指标。展开更多
根据2010年5-10月的北太平洋公海秋刀鱼生产调查资料及其表温数据,按月及经纬度1°×1°时空分辨率,利用渔业地理信息系统软件Marine Explorer 4.0和数理统计方法对北太平洋公海秋刀鱼作业渔场时空分布及其与表温的关系进...根据2010年5-10月的北太平洋公海秋刀鱼生产调查资料及其表温数据,按月及经纬度1°×1°时空分辨率,利用渔业地理信息系统软件Marine Explorer 4.0和数理统计方法对北太平洋公海秋刀鱼作业渔场时空分布及其与表温的关系进行分析。结果显示,北太平洋公海各月作业渔场变化较大,作业区域主要集中在36°N～47°N、145°E～163°E海域;渔场重心随时间推移在纬度上有先向北后向南的变动趋势,在经度上有向西变动的趋势;作业渔场分布在表温为10～17℃的海域,最佳作业表温为10～13℃,且适宜表温随着时间推移有先下降后上升的变动趋势。调查期间各个温度组作业单位捕捞努力量渔获量(CPUE)不存在显著性差异。研究亮点:北太平洋公海秋刀鱼渔场分布存在周期性变动现象,利用2010年最新的全时间序列调查数据,并结合环境数据,阐述了北太平洋公海秋刀鱼渔场的分布及其与SST的关系,为该领域的科学研究积累了数据,并可为我国大陆在该海域秋刀鱼生产提供参考。展开更多
As the summit of the Antarctic Plateau, Dome A has been received international attentions.In this paper, observational data of an automatic weather station (AWS) at Dome A in 2005–2007 were used to analyze the season...As the summit of the Antarctic Plateau, Dome A has been received international attentions.In this paper, observational data of an automatic weather station (AWS) at Dome A in 2005–2007 were used to analyze the seasonal variations of air temperatures near the ground and snow temperatures within a depth of 10 m. Analyses on the air temperatures show a typical feature of the coreless winter, and strong inversion maintains during the long winter. Accordingly the stratification near the ground is dominated by the near-neutral stable states. Seasonal fluctuations of the snow temperature decrease in amplitude and lag in phase with depth increasing, which leads to distinct seasonal temperature profiles within the depth of 10 m. Measurements show the mean annual air temperature near ground is about 5°C higher than the 10 m firn temperature due to the strong inversion near the ground. However, our estimation of the annual mean of air temperature at the ground based on the boundary layer theory is close to the mean 10 m firn temperature. The lowest air temperature (–82.7°C) currently measured at the Dome A is not the lowest one ever recorded in Antarctica, but the extremely low mean 10 m firn temperature (–58.2°C) indicates very low ground temperature. Given the prominent inversion near the ground, it is expected that Dome A might house the lowest ground temperature on the planet.展开更多
文摘根据2006年1-6月中国鱿钓船在西南大西洋的生产统计和表面水温（SST）、海面高度距平值（SSHA）的资料，利用海洋地理信息系统软件Marine explorer 4．0绘制了各月产量、日产量与SST和SSHA的关系图，推测出各月渔场的最适SST和SSHA值，并经K-S检验。结果表明：1—3月中心渔场主要分布在45°S、60°W附近海域，各月最适SST分别为11～12℃、12～13℃、12～13℃；4-6月中心渔场主要分布在42°S、58°W附近海域，各月最适SST分别为11～13℃、9～11℃、8～9℃。中心渔场主要分布在SSHA=0附近海域。中心渔场分布与SST和SSHA关系极为密切，可作为渔情分析指标。
文摘根据2010年5-10月的北太平洋公海秋刀鱼生产调查资料及其表温数据,按月及经纬度1°×1°时空分辨率,利用渔业地理信息系统软件Marine Explorer 4.0和数理统计方法对北太平洋公海秋刀鱼作业渔场时空分布及其与表温的关系进行分析。结果显示,北太平洋公海各月作业渔场变化较大,作业区域主要集中在36°N～47°N、145°E～163°E海域;渔场重心随时间推移在纬度上有先向北后向南的变动趋势,在经度上有向西变动的趋势;作业渔场分布在表温为10～17℃的海域,最佳作业表温为10～13℃,且适宜表温随着时间推移有先下降后上升的变动趋势。调查期间各个温度组作业单位捕捞努力量渔获量(CPUE)不存在显著性差异。研究亮点:北太平洋公海秋刀鱼渔场分布存在周期性变动现象,利用2010年最新的全时间序列调查数据,并结合环境数据,阐述了北太平洋公海秋刀鱼渔场的分布及其与SST的关系,为该领域的科学研究积累了数据,并可为我国大陆在该海域秋刀鱼生产提供参考。
基金The authors would like to thank Professor Liu Qiang and Sun Xi-lan for their kind help of revising the language of the paper and improving the quality of this manuscript. The work was partially supported by the National Natural Science Foundation of China (No.30670385)Key Project of Chinese Education Ministry (No.704037)the Special Invited Professor Foundation of Guangdong Province.~~
基金supported by the National Science & Technology Pillar Program (Grant No. 2006BAC 06B05)Treasury Special Program of China (Grant No. GYHY200706005)+1 种基金the National Natural Science Foundation of China (Grant No.40921003)the International S&T Cooperation Project of the Ministry of Science and Technology of China (Grant No.2009DFA21430)
文摘As the summit of the Antarctic Plateau, Dome A has been received international attentions.In this paper, observational data of an automatic weather station (AWS) at Dome A in 2005–2007 were used to analyze the seasonal variations of air temperatures near the ground and snow temperatures within a depth of 10 m. Analyses on the air temperatures show a typical feature of the coreless winter, and strong inversion maintains during the long winter. Accordingly the stratification near the ground is dominated by the near-neutral stable states. Seasonal fluctuations of the snow temperature decrease in amplitude and lag in phase with depth increasing, which leads to distinct seasonal temperature profiles within the depth of 10 m. Measurements show the mean annual air temperature near ground is about 5°C higher than the 10 m firn temperature due to the strong inversion near the ground. However, our estimation of the annual mean of air temperature at the ground based on the boundary layer theory is close to the mean 10 m firn temperature. The lowest air temperature (–82.7°C) currently measured at the Dome A is not the lowest one ever recorded in Antarctica, but the extremely low mean 10 m firn temperature (–58.2°C) indicates very low ground temperature. Given the prominent inversion near the ground, it is expected that Dome A might house the lowest ground temperature on the planet.
