The Agulhas Current System: A Key Control of the Atlantic System
厄加勒斯洋流系统:大西洋系统的关键控制
基本信息
- 批准号:0545204
- 负责人:
- 金额:$ 20.26万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2005
- 资助国家:美国
- 起止时间:2005-10-01 至 2008-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
It is proposed to investigate the physical processes controlling the low-frequency variations of the Agulhas Current retroflection and ring formation. This variability is caused by internal processes and external (to the ACS) influences. Methods from dynamical systems theory will be used to study the internal variability of the ACS and to develop a new dynamical theory of retroflection and ring formation. Output from a high horizontal (1/32) resolution Navy Layered Ocean Model (NLOM) simulation over the years 1979-2002 will be used to evaluate the importance of internal dynamics on the low-frequency variability of the ACS (versus external causes). This study is motivated by recent observations showing the existence of strong low-frequency (interannual-to-decadal) variability of the upper layer transport in the Agulhas Current retroflection region, and suggesting that there is a strong correspondence between maximum transport values and ring shedding events. It is also motivated by recent paleoceanographic proxy analyses indicating that during a glacial period, the Agulhas rings in- flux was significantly reduced. The influx, however, dramatically increased towards the end of the glacial period. It has been suggested that, due to salt anomalies carried by the rings, this increase of influx contributed to the re-start of deep water formation in the Atlantic. Although there are presently separate theories for both retroflection and ring formation, there is no satisfying theory connecting both phenomena as well as explaining their interannual variability. Without answers to these questions, the theory on the behavior of the ACS will stay incomplete. The dynamical systems study of the Agulhas Current fits also a broader attempt to determine systematically the solution structure, in particular the transitions to complex behavior of those solutions, in a hierarchy of ocean models of western boundary currents.
本文提出了研究控制阿古拉斯海流回折和环形成低频变化的物理过程。这种可变性是由内部过程和外部(ACS)影响引起的。从动力系统理论的方法将被用来研究ACS的内部变化,并制定一个新的动力学理论的回射和环的形成。输出从一个高水平(1/32)分辨率海军分层海洋模式(NLOM)的模拟在1979年至2002年将被用来评估的重要性,内部动态的低频变化的ACS(与外部原因)。这项研究的动机是最近的观察显示存在较强的低频(年际到十年)的变化,上层运输在厄古拉斯电流retroflection区域,并建议有一个很强的对应关系之间的最大运输值和环脱落事件。最近的古海洋学代用指标分析表明,在冰川期,阿古拉斯环流入量显着减少,这也是动机。然而,流入量在冰川期结束时急剧增加。有人认为,由于环携带的盐异常,这种流入量的增加有助于大西洋深水形成的重新开始。虽然目前有两个独立的理论都回射和环的形成,有没有令人满意的理论连接这两种现象,以及解释其年际变化。没有这些问题的答案,关于ACS行为的理论将是不完整的。动力系统的研究也适合更广泛的尝试,以确定系统的解决方案的结构,特别是过渡到复杂的行为,这些解决方案,在层次结构的海洋模型的西部边界流的阿古拉斯电流。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Doron Nof其他文献
Was there ice along the shore of the Sea of Galilee during the last 12,000?—Reply to a comment by Prange et al. (2007) and a comment by Friedman (2007)
- DOI:
10.1007/s10933-007-9137-7 - 发表时间:
2007-10-02 - 期刊:
- 影响因子:1.300
- 作者:
Doron Nof;Ian McKeague;Nathan Paldor - 通讯作者:
Nathan Paldor
Is There a Paleolimnological Explanation for ‘Walking on Water’ in the Sea of Galilee?
- DOI:
10.1007/s10933-005-1996-1 - 发表时间:
2006-04-01 - 期刊:
- 影响因子:1.300
- 作者:
Doron Nof;Ian McKeague;Nathan Paldor - 通讯作者:
Nathan Paldor
Doron Nof的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Doron Nof', 18)}}的其他基金
Cave Ventilation and Dripwater Geochemistry: Modern Time Series Speleothem Paleoproxy Calibration
洞穴通风和滴水地球化学:现代时间序列 Speleothem Paleoproxy 校准
- 批准号:
1032403 - 财政年份:2010
- 资助金额:
$ 20.26万 - 项目类别:
Standard Grant
The death of Agulhas rings and the emergence of a modified Brazil Current
厄加勒斯环的死亡和改良巴西洋流的出现
- 批准号:
0928271 - 财政年份:2009
- 资助金额:
$ 20.26万 - 项目类别:
Standard Grant
Collaborative research: Understanding the physics of the Bering Strait through paleoceanography and modeling
合作研究:通过古海洋学和建模了解白令海峡的物理原理
- 批准号:
0902835 - 财政年份:2009
- 资助金额:
$ 20.26万 - 项目类别:
Standard Grant
Agulhas rings pathways and the resulting MOC control
厄加勒斯环通路和由此产生的 MOC 控制
- 批准号:
0752225 - 财政年份:2008
- 资助金额:
$ 20.26万 - 项目类别:
Standard Grant
The Agulhas-Brazil Current Domino
厄加勒斯-巴西海流多米诺骨牌
- 批准号:
0241036 - 财政年份:2003
- 资助金额:
$ 20.26万 - 项目类别:
Standard Grant
The Role of Agulhas Rings in the Western South Atlantic
厄加勒斯环在南大西洋西部的作用
- 批准号:
9911324 - 财政年份:2000
- 资助金额:
$ 20.26万 - 项目类别:
Standard Grant
Rings, Eddies and Retroflection as a Mechanism for Inter-Basin Exchange
环、涡流和反射作为跨流域交换的机制
- 批准号:
9633655 - 财政年份:1996
- 资助金额:
$ 20.26万 - 项目类别:
Continuing Grant
Flows Through Multiple Gaps with Applications to the Indonesian Throughflow
流经多个间隙并应用于印度尼西亚通流
- 批准号:
9503816 - 财政年份:1995
- 资助金额:
$ 20.26万 - 项目类别:
Continuing Grant
Nonlinear Processes in High Latitudes
高纬度地区的非线性过程
- 批准号:
9102025 - 财政年份:1991
- 资助金额:
$ 20.26万 - 项目类别:
Continuing Grant
相似海外基金
Research on Insulation Properties and Diagnostics for Smart Electric Power Equipment by Measuring Discharge Current Using a Super High Frequency Wideband Measurement System with Picosecond resolution
利用皮秒分辨率超高频宽带测量系统测量放电电流来研究智能电力设备的绝缘性能和诊断
- 批准号:
23H01401 - 财政年份:2023
- 资助金额:
$ 20.26万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
PFI-TT: A Cost-Effective and Scalable Tidal Current Energy Harvesting System
PFI-TT:一种经济有效且可扩展的潮汐能收集系统
- 批准号:
2329791 - 财政年份:2023
- 资助金额:
$ 20.26万 - 项目类别:
Continuing Grant
A novel electric current-based treatment system for chronic wound biofilm infections
一种新型的基于电流的慢性伤口生物膜感染治疗系统
- 批准号:
10720191 - 财政年份:2023
- 资助金额:
$ 20.26万 - 项目类别:
Prototype of Balanced Transcutaneous Energy Transmission System with Reverse-Wound Reverse-Polarity Coil for Leakage Current Reduction
带有反绕反极性线圈以减少漏电流的平衡经皮能量传输系统原型
- 批准号:
23K03823 - 财政年份:2023
- 资助金额:
$ 20.26万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Automatic reporting system of current weather information using drive recorder images
使用行车记录仪图像自动报告当前天气信息的系统
- 批准号:
23K11234 - 财政年份:2023
- 资助金额:
$ 20.26万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Targeted drug delivery system to overcome blood-brain barrier and therapeutic resistance to current standard of care in Glioblastoma
靶向药物输送系统可克服血脑屏障和对胶质母细胞瘤现行护理标准的治疗耐药性
- 批准号:
10659749 - 财政年份:2023
- 资助金额:
$ 20.26万 - 项目类别:
Evolution of Glacial Meltwater in the North Atlantic Current - Subpolar Front System
北大西洋洋流-副极锋系统中冰川融水的演化
- 批准号:
2202771 - 财政年份:2022
- 资助金额:
$ 20.26万 - 项目类别:
Standard Grant
Fruit and Vegetables Within the Current Food Production System and Health
当前粮食生产体系中的水果和蔬菜与健康
- 批准号:
2669417 - 财政年份:2022
- 资助金额:
$ 20.26万 - 项目类别:
Studentship
High Voltage Direct Current Test System
高压直流测试系统
- 批准号:
505072487 - 财政年份:2022
- 资助金额:
$ 20.26万 - 项目类别:
Major Research Instrumentation
Urgently needed replacement of the alternative current magnetic susceptibility ACMS(I) coil set to repair the Physical Property Management System (PPMS)
急需更换交流磁化率 ACMS(I) 线圈组以修复实物财产管理系统 (PPMS)
- 批准号:
RTI-2023-00167 - 财政年份:2022
- 资助金额:
$ 20.26万 - 项目类别:
Research Tools and Instruments