Observations and Analysis Throughflow Indonesian Seas, Upwelling, and Mixing Physics (TRIUMPH) Data

印度尼西亚海域通流、上升流和混合物理 (TRIUMPH) 数据的观测和分析

基本信息

批准号：
2242151
负责人：
Raden Susanto
金额：
$ 73.66万
依托单位：
University of Maryland, College Park
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2023
资助国家：
美国
起止时间：
2023-04-15 至 2026-03-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2242151&HistoricalAwards=false
关键词：
Observations Analysis Throughflow Indonesian Seas

项目摘要

The goal of this project is to analyze oceanographic data from the Indonesian Through Flow (ITF) region taken during the TRIUMPH (ThRoughflow Indonesian seas, Upwelling, and Mixing PHysics) oceanographic field program, a collaboration with researchers from Indonesia and China. TRIUMPH has deployed seven moorings in the main direct ITF pathways and the upwelling region of south Java since Fall 2019. The project will examine: the full-depth of ITF transport variability and its associated heat and freshwater fluxes in the Makassar, Lombok, and Alas Straits on tidal, intraseasonal, and seasonal timescales; tidal mixing variability; and, propagation of Kelvin waves from the tropical Indian Ocean-Makassar Strait.The Indonesian Through Flow (ITF) is an essential conduit for the flow of low latitude Pacific Ocean waters into the Indian Ocean. Its variability is particularly significant because it plays a vital role in global ocean circulation and climate. Even though ITF has been measured the last three decades, no detailed measurements of full depth variability have been done nor has its impacts on mixing and upwelling along the eastern tropical Indian Ocean been investigated. This absence of data represents a significant gap in our understanding of the role of this shallow choke point in regulating the Pacific-Indian Ocean exchange, air-sea interactions, and water-mass transformation in the chokepoint of the shallow Meridional Ocean Circulation. Hence, it is essential to have detailed simultaneous measurements of the ITF, mixing, and upwelling.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目的目标是分析在 TRIUMPH（印度尼西亚海域通流、上升流和混合物理）海洋学现场计划（与印度尼西亚和中国的研究人员合作）期间获取的印度尼西亚通流 (ITF) 地区的海洋学数据。自 2019 年秋季以来，TRIUMPH 已在主要直接 ITF 路径和南爪哇上升流区域部署了七个系泊装置。该项目将研究：望加锡、龙目岛和阿拉斯的 ITF 输运变化的全深度及其相关的热量和淡水通量潮汐、季节内和季节时间尺度上的海峡；潮汐混合变化；开尔文波从热带印度洋望加锡海峡传播。印度尼西亚贯穿流（ITF）是低纬度太平洋海水流入印度洋的重要通道。它的变异性特别显着，因为它在全球海洋环流和气候中发挥着至关重要的作用。尽管 ITF 在过去三十年中已经被测量过，但尚未对全深度变化进行详细测量，也没有调查其对东热带印度洋混合和上升流的影响。数据的缺乏表明我们对浅层阻塞点在调节太平洋-印度洋交换、海气相互作用以及浅层经向大洋环流阻塞点的水团转化方面的作用的理解存在重大差距。因此，必须对 ITF、混合和上升流进行详细的同步测量。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。