| 秋刀鱼舷提网渔具性能模型试验与海上实测结果的比较评估 |
| |
| 引用本文： | 石永闯,朱清澄,花传祥,张衍栋.秋刀鱼舷提网渔具性能模型试验与海上实测结果的比较评估[J].海洋学报,2019,41(2):123-133. |
| |
| 作者姓名： | 石永闯 朱清澄 花传祥 张衍栋 |
| |
| 作者单位： | 上海海洋大学 海洋文化与法律学院,上海,201306;上海海洋大学 海洋科学学院,上海 201306;上海海洋大学国家远洋渔业工程技术研究中心,上海 201306;大洋渔业资源可持续开发省部共建教育部重点实验室,上海201306;上海海洋大学 海洋科学学院,上海,201306 |
| |
| 基金项目： | 国家科技支撑计划（2013BAD13B05）。 |
| |
| 摘 要： | 舷提网是秋刀鱼（Cololabis saira）作业的主要方式之一,由于渔获率较高得到迅速推广。模型试验和海上实测是研究网具性能最为普遍的两种方式,两者试验结果的对比评估对于更好地测定网具作业性能具有十分重要的意义。根据2014年11-12月进行的秋刀鱼舷提网静水槽模型试验以及2015年7-10月和2016年6-10月在"鲁蓬远渔019"号船上进行的秋刀鱼舷提网网具性能测试试验测定的网具数据,采用多元线性回归方法,对网具的沉降深度和提升速度进行了标准化,并利用Bootstrap法分析了舷提网模型试验和海上实测试验结果。结果表明:（1）通过Bootstrap法得出标准化后的实测网最大沉降深度的均值分布范围为20.37~29.54 m,95%置信区间为21.76~28.13 m;模型网网具最大沉降深度均值的范围为26.42~37.58 m,95%置信区间为27.70~36.20 m。实测网网具中部最大沉降深度均值大约是模型网网具中部最大沉降深度均值的0.731~0.783倍。（2）通过Bootstrap法得出标准化后的实测网提升速度的均值分布范围为0.107~0.193 m/s,95%置信区间为0.111~0.191 m/s;模型网网具提升速度均值的范围为0.204~0.316 m/s,95%置信区间为0.207~0.312 m/s。实测网网具中部提升速度均值大约是模型网网具中部提升速度均值的0.591~0.611倍。（3）当假设海流速度为0时,求得实测网网具的平均沉降深度为29.14~41.21 m,约为模型网网衣中部最大沉降深度均值的0.751~0.807倍。（4）30 m和60 m水深的海流速度均对实物网网具中部的沉降深度有所影响,60 m水深的流速影响更加显著（P<0.05）。
|
| 关 键 词： | 秋刀鱼 舷提网 沉降深度 提升速度 多元回归 |
| 收稿时间： | 2018/2/27 0:00:00 |
| 修稿时间： | 2018/6/12 0:00:00 |
Evaluation of saury stick-held net performance between model test and on-sea measurements |
| |
| Shi Yongchuang,Zhu Qingcheng,Hua Chuanxiang and Zhang Yandong.Evaluation of saury stick-held net performance between model test and on-sea measurements[J].Acta Oceanologica Sinica (in Chinese),2019,41(2):123-133. |
| |
| Authors: | Shi Yongchuang Zhu Qingcheng Hua Chuanxiang and Zhang Yandong |
| |
| Institution: | 1.College of Marine Culture and Law, Shanghai Ocean University, Shanghai 201306, China2.College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;National Engineering Research Center for Pelagic Fishery, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China3.College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China |
| |
| Abstract: | The stick-held net is one of the main methods for the fishing of saury (Cololabis saira), which is being rapidly promoted due to the high catch rate. Model tests and on-sea surveys are the two most common ways to study the performance of the fishing gear. The comparative evaluation of the two test results is of great significance for the better determination of the net workability. Based on the model net test of stick-held net in November-December 2014 and the on-sea measurement of stick-held net at the "Lupengyuanyu 019" in July-October 2015 and June-October 2016, the method of multivariate linear regression is used to standardize the sinking depth and speed of the rising. Bootstrap method is used to analyze the experimental model of the rigging and the measured results at sea. The results show that:(1) The mean distribution range of normalized maximal sinking depth is 20.37-29.54 m and the 95% confidence interval is 21.76-28.13 m by Bootstrap method. The range of the maximum sinking depth of the model net is 26.42-37.58 m, 95% confidence interval is 27.70-36.20 m. The average net sinking depth of the measured network with the central part is about 0.731-0.783 times the average maximum sinking depth of the central part of the model network. (2) According to the Bootstrap method, the average velocity of the measured network is 0.107-0.193 m/s and the 95% confidence interval is 0.111-0.191 m/s. The range of the model network with the average speed of ascension is 0.204-0.316 m/s, 95% confidence interval is 0.207-0.312 m/s. Measured network with the central upgrade speed is about the average model network with the central upgrade speed of 0.591-0.611 times. (3) When the current velocity is assumed to be 0, the average sinking depth of the measured network is calculated as 29.14-41.21 m, which is about 0.751-0.807 times of the average maximum sinking depth of the model network. (4) Both the current velocity of 30 m and the depth of 60 m have an impact on the settlement depth of the middle part of the physical net, and the influence of the flow velocity at the depth of 60 m is more significant (P<0.05). |
| |
| Keywords: | saury (Cololabis saira) stick-held net sinking deep rising speed multiple regression analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《海洋学报》浏览原始摘要信息 |
| 点击此处可从《海洋学报》下载免费的PDF全文 |
|
