Application of vertically integrated sampling approach to study of new production via 234Th-238U disequilibria |
| |
| Authors: | Chen Feizhou Huang Yipu Chen Min |
| |
| Affiliation: | 1.College of Fishery Science, Shanghai Fisheries University, Shanghai 200090, China2.Department of Oceanography, Xiamen University, Xiamen 361005, China |
| |
| Abstract: | The spatial and temporal distributions of new production vary largely in different sea areas. To understand the level of new production in the sea area studied better, an estimate of new production must be obtained in large spatial and temporal scales. The ~234Th/ ~238U disequilibrium is an effective method for the study of new production. Two sampling strategies, vertically integrated sampling ap proach based on trapezoidal integration principle and discrete layer sampling approach, were compared in the studies of the xiamen Bay and the northern South China Sea. The scavenging fluxes and removal fluxes of ~234Th and the residence times for dissolved and particulate ~234Th were calculated. The coinci dent results from two Sampling approach suggest that vertically integrated sampling approach is not only effective and reliable, but also significantly reduces the number and volume of samples. It allows us to study new production by ba ~(234)Th - ~(238)U disequilibria in large spatial scale. |
| |
| Keywords: | New production vertically integrated Sampling approach ~(234)Th - ~(238)U disequilibria Xia men Bay northern South China Sea |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《海洋学报(英文版)》下载全文 |
|
