Gulf of Alaska Shelf and Slope Iron and Nitrate Data, Copper River Region, 2010

These are data from cruises carried out in April, May and July 2010 from the Copper River (AK) mouth to beyond the shelf break, approximately 150 km from shore. The focus of the dataset is the iron (Fe) data, intended to help infer the processes controlling concentrations of Fe. The data include concentrations of total dissolvable Fe (TDFe), dissolved Fe (dFe), nitrate, and salinity, temperature and fluorescence data (CTD) as background. This also includes sea surface height deviation data for a two month interval when a Yakutat eddy passed by the sampling site. Also included is a simple 1-dimensional numerical model used to simulate the the April DFe data assuming a DFe flux from shelf sediments, horizontal transport by eddy diffusion, and removal by scavenging. Data from eight model simulations are also included.

本数据集源自2010年4月、5月与7月开展的科考航次，采样范围覆盖阿拉斯加州（AK）铜河河口至离岸约150公里的陆架坡折外侧海域。本数据集的核心研究对象为铁（Fe）相关数据，旨在助力解析调控铁浓度的关键过程。数据涵盖总可溶性铁（total dissolvable Fe，TDFe）、溶解态铁（dissolved Fe，dFe）与硝酸盐的浓度数据，同时包含作为背景参考的盐度、温度及荧光数据（CTD）。此外，数据集还收录了雅库塔特涡旋途经采样站点期间两个月时段内的海面高度偏差数据。本次发布的数据还包含一款简易一维数值模型，该模型基于陆架沉积物释放的溶解态铁通量、涡旋扩散介导的水平输运以及清除沉降作用三项假设条件，用于模拟2010年4月的溶解态铁数据；同时附带8组该模型的模拟结果。