气候变化领域集成服务门户(CCPortal): Physical Processes Determine Spatial Structure in Water Temperature and Residence Time on a Wide Reef Flat

CCPortal

DOI	10.1029/2020JC016543
	Physical Processes Determine Spatial Structure in Water Temperature and Residence Time on a Wide Reef Flat
	Reid E.C.; Lentz S.J.; DeCarlo T.M.; Cohen A.L.; Davis K.A.
发表日期	2020
ISSN	21699275
卷号	125 期号:12
英文摘要	On coral reefs, flow determines residence time of water influencing physical and chemical environments and creating observable microclimates within the reef structure. Understanding the physical mechanisms driving environmental variability on shallow reefs, which distinguishes them from the open ocean, is important for understanding what contributes to thermal resilience of coral communities and predicting their response to future anomalies. In June 2014, a field experiment conducted at Dongsha Atoll in the northern South China Sea investigated the physical forces that drive flow over a broad shallow reef flat. Instrumentation included current and pressure sensors and a distributed temperature sensing system, which resolved spatially and temporally continuous temperature measurements over a 3-km cross-reef section from the lagoon to reef crest. Spectral analysis shows that while diurnal variability was significant across the reef flat—a result expected from daily solar heating—temperature also varied at higher frequencies near the reef crest. These spatially variable temperature regimes, or thermal microclimates, are influenced by circulation on the wide reef flat, with spatially and temporally variable contributions from tides, wind, and waves. Through particle tracking simulations, we find the residence time of water is shorter near the reef crest (3.6 h) than near the lagoon (8.6 h). Tidal variability in flow direction on the reef flat leads to patterns in residence time that are different than what would be predicted from unidirectional flow. Circulation on the reef also determines the source (originating from offshore vs. the lagoon) of the water present on the reef flat. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	coral reef; distributed temperature sensing; temperature variability
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186569
作者单位	Department of Civil and Environmental Engineering, University of California, Irvine, CA, United States; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Now at Hawai'i Pacific University, Honolulu, HI, United States; Department of Earth System Science, University of California, Irvine, CA, United States
推荐引用方式 GB/T 7714	Reid E.C.,Lentz S.J.,DeCarlo T.M.,et al. Physical Processes Determine Spatial Structure in Water Temperature and Residence Time on a Wide Reef Flat[J],2020,125(12).
APA	Reid E.C.,Lentz S.J.,DeCarlo T.M.,Cohen A.L.,&Davis K.A..(2020).Physical Processes Determine Spatial Structure in Water Temperature and Residence Time on a Wide Reef Flat.Journal of Geophysical Research: Oceans,125(12).
MLA	Reid E.C.,et al."Physical Processes Determine Spatial Structure in Water Temperature and Residence Time on a Wide Reef Flat".Journal of Geophysical Research: Oceans 125.12(2020).