Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements

Weiqi Chen; Xuelian Meng; Shuisen Chen; Jia Liu

doi:doi:10.11648/j.earth.20180702.11

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Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements

Weiqi Chen, Xuelian Meng, Shuisen Chen, Jia Liu

Published in Earth Sciences (Volume 7, Issue 2)

Received: 6 August 2017 Accepted: 25 September 2017 Published: 3 February 2018

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Abstract

From July 11-12, 2009, the tropical storm Soudeler swept the study area with a Level 8 wind and disturbed the suspended substance in this coastal area, which may have caused some fatal impact on the health condition of coral reef in Xuwen coral reef coast located in Leizhou Peninsula of South China. In order to evaluate the impact of extreme weather on coral reef, this study applied and validated a TSS model to map the TSS variation based on red and infrared spectral bands of MODIS data through one before-storm and two after-storm images after applying the atmospheric correction of in-water linear regression analysis. By mapping and comparing the changes of TSS values before- and after- tropical storm, this study found substantial increases of TSS concentrations as a mean value of 47.8 mg/L (~3.6 times of mean TSS value before rainstorm) in the area during the passage of tropical storm compared to those under no-storm condition. Besides, the TSS returned back to even lower values five days after the passage of tropical storm as a mean value of 3.6mg/L (~one quarter of mean TSS value (13.4 mg/L) before rainstorm). The conclusion was made that the TSS concentration in estuary and coastal areas under local rainstorm tends to return to a normal level faster (approximately 2.5 days) than under a hurricane [1] or tropical storm as discovered in this study (approximately 5 days). Compared to the less frequent and non-synoptic in-situ field sampling approach, the synoptic and frequent sampling facilitated by frequent remote sensing imagery of MODIS provides an improved assessment of TSS concentration and two-dimensional distribution patterns and is recommended to be used as a valuable tool for frequently monitoring coral reef water quality in coastal water bodies of China and other areas in the world if applicable.

Published in	Earth Sciences (Volume 7, Issue 2)
DOI	10.11648/j.earth.20180702.11
Page(s)	42-52
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

MODIS, TSS, Coastal Coral Reef, Tropical Rainstorm, Investigating

References

[1]	Chen, S. S., Fang, L. G., Zhang, L. X., Huang, W. R. Remote sensing of turbidity in seawater intrusion reaches of Pearl River Estuary – A case study in Modaomen water way, China. Estuarine, Coastal and Shelf Science. Vol. 82, No. 1, 2009, pp. 119-127.
[2]	Populus, J., Hastuti, W., Martin, J. L. M., Guelorget, O., Sumartono, B., Wibowo, A. Remote sensing as a tool for diagnosis of water quality in indonesian seas. Ocean & Coastal Management. Vol. 27, No. 3, 1995, pp. 197-215.
[3]	Washburn, L., McClure, K. A., Jones, B. H., Bay, S. M. Spatial scales and evolution of stormwater plumes in Santa Monica Bay. Marine Environmental Research. Vol. 56, Issues 1–2, 2003, pp. 103-125.
[4]	Samuel, Dominggus., Awak, H. L. M. K., Jonson Lumban Gaol, Beginer Subhan, Hawis H. Madduppa, Dondy Arafat. Coral Reef Ecosystem Monitoring Using Remote Sensing Data: Case Study in Owi Island, Biak, Papua. Procedia Environmental Sciences, Vol. 33, 2016, pp. 600-606.
[5]	Dekshenieks, M. M., Hofmann, E. E., Klinck, J. M., Powell, E. N. Quantifying the effects of environmental change on an oyster population: a modeling study. Estuaries. Vol. 23, No. 5, 2000, pp. 593-610.
[6]	Avio, C. G., Gorbi, S., Regoli, F. Plastics and microplastics in the oceans: From emerging pollutants to emerged threat. Marine Environmental Research, Vol. 128, 2017, pp. 2-11.
[7]	Fan, H., Huang, H. J. Response of coastal marine eco-environment to river fluxes into the sea: a case study of the Huanghe (Yellow) River mouth and adjacent waters. Marine Environmental Research. Vol. 65(5), 2008, pp. 378–387.
[8]	Saiz-Salinas, J. I., Urkiaga-Alberdi, J. Faunal responses to turbidity in a man-modified bay (Bilbao, Spain). Marine Environmental Research. Vol. 47, No.4, 1999, pp. 331–347.
[9]	Wang, H. Q., Hladik, C. M., Huang, W. R., Milla, K., Edmiston, L., Harwell, M. A., Schalles, J. F. Detecting the spatial and temporal variability of chlorophyll-a concentration and total suspended solids in Apalachicola Bay, Florida using MODIS imagery. International Journal of Remote Sensing. Vol. 31, No.2, 2010, pp. 1366–5901.
[10]	Li-Ye Zhang, Shan-shan Chung, Jian-wen Qiu. Ecological carrying capacity assessment of diving site: A case study of Mabul Island, Malaysia. Journal of Environmental Management, Vol. 183, No 1, 2016, pp. 253-259.
[11]	Hoegh-Guldberg, O. Climate change, coral bleaching and the future of the world’s coral reefs. Marine and Freshwater Research. Vol. 50, No.8, 1999, pp. 839-866.
[12]	Chen, J. Y., Mao, Z. H., and Zhang, H. G., et al. Analysis on coral reefs mapping using SPOT5 at Dongsha. Acta Oceanologia Sinica. Vol. 29, No.3, 2007, pp. 51-57.
[13]	Acker, J. G., Vasilkov, A., Nadeau, D., & Kuring, N. (). Use of SeaWiFS ocean color data to estimate neritic sediment mass transport from carbonate platforms for two hurricane-forced events. Coral Reefs. Vol 23, No.1, 2004, pp. 39−47.
[14]	Carla I. Elliff, Ruy K. P. Kikuchi. Ecosystem services provided by coral reefs in a Southwestern Atlantic Archipelago. Ocean & Coastal Management, Vol 136, 2017, pp. 49-55.
[15]	Dahl, A L. Status and conservation of South Pacific coral reefs. Proc. 5th int. Coral Reef Congr. No.6, 1985, pp.509-513.
[16]	Pan, Yan-li, and Tang, Dan-ling, 2009. General introduction to satellite remote sensing of coral reef bleaching. ACTA ECOLOGICA SINICA, Vol. 29, No.9, pp.5077-5080.
[17]	Erin K. Eastwood, Darien G. Clary, Don J. Melnick. Coral reef health and management on the verge of a tourism boom: A case study from Miches, Dominican Republic. Ocean & Coastal Management, Vol. 138, No.15, 2017, pp. 192-204.
[18]	Islam, M. M., M. M. Shamsuzzaman, M. M. H. Mozumder, X. M. Xu, M. Yu, Jewel, M. A. S.. Exploitation and conservation of coastal and marine fisheries in Bangladesh: Do the fishery laws matter? Marine Policy, Vol. 76, 2017, pp. 143-151.
[19]	Goreau, T F. (1964). Mass expulsion of zoxanthellae from Jamaican Reef communities after hurricane Flora. Science, Vol. 145, pp.383-386.
[20]	Yu, K. F. Zhao, J. X., Liu, T. S., Wei, G. H., Wang, P. X., Collerson, KD. (2004). T S High-frequency winter cooling and reef coral mortality during the Holocene climatic optimum. Each Planet Sci. Lett. Vol. 224, pp.143-155.
[21]	Hollie M. Putnam, Katie L. Barott, Tracy D. Ainsworth, Ruth D. Gates. The Vulnerability and Resilience of Reef-Building Corals. Current Biology, Vol. 27, No. 11, 2017, pp. r528-r540.
[22]	Liao, B. L., Li Liu, Chuwu Liu. Research status and prospect of Xuwen coral reef. Journal of Guangdong Ocean University. Vol.31, No.4, 2011, Pages 91-96.
[23]	Niu, W. T., Xu, X. Z., Lin, R. C., Huang, D. Y. 2010. Effects of sedimentation on coral reefs and reef organisms. Marine Science Bulletin, Vol.29, NO.1, 2010.
[24]	Fabricius, M. Effects of terrestrial runoff on the ecology of corals and coral reefs: review and synthesis. Marine Pollution Bulletin. Vol. 50, 2005, pp.125-146.
[25]	Hubbard, D K. Sedimentation as a control of reef development: St. Croix. Coral Reefs, Vol. 5, 1986, pp.117-125.
[26]	Zhao, H., Wang, L. R., Song, C. J. 2006. The distribution and protection of the coral reefs in the west of Xuwen County. Tropical Geography, Vol.26, No. 3, pp.202-206.
[27]	Rogers, C S. The marine environments of Brewers Bay, Perseverance Bay, Flat Cay and Saba Island, St Thomas, U. S. V. I., with emphasis on coral reefs and seagrass beds. Dept Conservation and Cultural Affairs, Gov't of the Virgin Islands, 1982, pp. 1-181.
[28]	National Bureau of Oceanography of China. Bulletin of marine environment status of China in 2012. http://www.soa.gov.cn/, 2013.
[29]	Chen, S. S, Huang, W. R., Chen, W. Q., Wang, H. Q. Remote sensing analysis of rainstorm effects on sediment concentrations in Apalachicola Bay, USA. Ecological Informatics, 2010, doi:10.1016/j.ecoinf.2010.12.001.
[30]	Shuisen Chen, Liusheng Han, Xiuzhi Chen, Dan Li, Lin Sun, Yong Lia. Estimating wide range Total Suspended Solids concentrations from MODIS 250-m imageries: An improved method. ISPRS Journal of Photogrammetry and Remote Sensing, Vol. 99, 2015, pp. 58-69.
[31]	Chiara Corbari, Fabio Lassini, Marco Mancini. Effect of intense short rainfall events on coastal water quality parameters from remote sensing data. Continental Shelf Research, Vol. 123, 2016, pp. 18-28.
[32]	Hae-Cheol Kim, Seunghyun Son, Yong Hoon Kim, Jong Seong Khim, Jungho Nam, Won Keun Chang, Jung-Ho Lee, Chang-Hee Lee, Jongseong Ryu. Remote sensing and water quality indicators in the Korean West coast: Spatio-temporal structures of MODIS-derived chlorophyll-a and total suspended solids. Marine Pollution Bulletin, Vol. 121, Issues 1–2, 2017, pp. 425-434.
[33]	Heyes, A., Miller, C., & Mason, R. P. (2004). Mercury and methylmercury in Hudson River sediment: Impact of tidal resuspension on partitioning and methylation. Marine Chemistry, Vol. 90, No. 1–4, pp.75−89.
[34]	Udy, J., Gall, M., Longstaff, B., Moore, K., Roelfsema, C., Spooner, D. R., Albert, S. (2005). Water quality monitoring: a combined approach to investigate gradients of change in the Great Barrier Reef, Australia. Marine Pollution Bulletin, Vol. 51, pp.224–238.
[35]	Hellweger, F. L., Schlosser, P., Lall, U., Weissel, J. K., 2004. Use of satellite imagery for water quality studies in New York Harbor. Estuarine, Coastal and Shelf Science, Vol. 61, pp. 437–448.
[36]	Li, H., Mijail Arias, Anouk Blauw, Hans Los, Arthur E. Mynett, Steef Peters. Enhancing generic ecological model for short-term prediction of Southern North Sea algal dynamics with remote sensing images. Ecological Modelling, Vol. 221, Issue 20, 2010, pp. 2435-2446.
[37]	Jiang, H. Retrieval of Total Suspended Sediment Concentration in Qingshan Lake by Hyperspectral Remote Sensing, JOURNAL OF ANHUI AGRICULTURAL SCIENCES, Vol. 39, No. 15, 2011.
[38]	Fu, X. M., Wang, C. Y., Shao, C. L., Han, L., LI, G. Q. 2009. Investigation on the Status of Coral Reef Resources and Medicinal Research in China 1I. Resource Decline Status, Protection and Management. Water quality-Determination of suspended substance-Gravimetric method, National standard of China. Periodical of Ocean University of China, Vol. 39, No. 4, 1990, pp.685-690. GB 11901-89.
[39]	Forrester, A. 1997. The Effects of El Niño on Marine Life. Cambridge Scientific Abstracts Web site. http://www.csa.com/discoveryguides/archives/elnino.php.
[40]	National Marine Fisheries Service (NMFS). 2001. NMFS Office of Protected Resources Web site. www.nmfs.noaa.gov/prot_res/PR/.
[41]	Burt, J. A., S. Coles, H. van Lavieren, O. Taylor, K. Samimi-Namin. Oman's coral reefs: A unique ecosystem challenged by natural and man-related stresses and in need of conservation. Marine Pollution Bulletin, Vol. 105, Issue 2, 2016, pp. 498-506.
[42]	Guangdong Provincial Oceanic and Fishery Bureau. The marine environment bulletin of Guangdong Province in 2016, http://www.gdofa.gov.cn/gzhd/zxft/201706/t20170614_846281.htm, 2016.
[43]	Chen, S. S., Huang, W. R., Wang, H. Q., Li, D., 2009. Remote sensing assessment of sediment re-suspension during Hurricane Frances in Apalachicola Bay, USA. Remote Sensing of Environment, Vol. 113, No. 12, pp.2670–2681.
[44]	Zhu, L., Wang, S, Zhou, Y. (2007). Estimation of suspended sediment concentration in Taihu Lake using MODIS image data. Advances in Water Science, Vol. 18, No. 3, pp. 444-450.
[45]	Komick, N. M., Costa, M. P. F., & Gower, J. (2009). Bio-optical algorithm evaluation for MODIS for western Canada coastal waters: An exploratory approach using in situ reflectance. Remote Sensing of Environment, Vol.113, No. 4, pp.794−804.
[46]	Martiny, N., Santer, R., & Smolskaia, I. (2005). Vicarious calibration of MERIS over dark waters in the near infrared. Remote Sensing of Environment, Vol. 94, No. 4, pp.475−490.
[47]	Verstraete, M. (1994). The contribution of remote sensing to monitor vegetation and to evaluate its dynamic aspects. In F. Veroustraete & R. Ceulemans (Eds.), Vegetation, Modeling and Climatic Change Effects. The Hague, The Netherlands: SPB Academic Publishing. pp. 207−212.
[48]	Chavez, P. S., 1988. An improved dark-object subtraction technique for atmospheric scattering correction of multispectral data. Remote Sensing of Environment, Vol. 24, pp.459-479.
[49]	Shi, K., Li Y., Li, L.,. Lu, H., Song, K. S., Liu, Z. H., Xu, Y. F., Li, Z. C. (2013). Remote chlorophyll-a estimates for inland waters based on a cluster-based classification. Science of The Total Environment, Vol. 444, pp. 1-15.
[50]	Majozi, Nobuhle P., et al, 2014. Remote sensing of euphotic depth in shallow tropical inland waters of Lake Naivasha using MERIS data. Remote Sensing of Environment, Vol. 148, 2014, pp. 178-189
[51]	Han, L. S. et al, 2014. Estimation of water clarity in offshore marine areas based on modified semi-analysis spectra model. Spectroscopy and Spectral Analysis, Vol. 34, Issue 2, pp477-482.
[52]	Janicki, A., Pribble, R., Janicki, S., & Winowitch, M. (2001). An analysis of long-term trends in Tampa Bay water quality. Tampa Bay estuary technical report, Vol. 04–01, No. 48.
[53]	Lipp, E. K., Schmidt, N., Luther, M., & Rose, J. B. (2001). Determining the effects of El Niño–southern oscillation events on coastal water quality. Estuaries, Vol. 24, pp. 491−497.
[54]	Schmidt, N., & Luther, M. (2002). ENSO impacts on salinity in Tampa Bay, Florida. Estuaries, Vol. 25, No. 5, pp. 976−984.
[55]	Erftemeijer, Paul L. A., Riegl, Bernhard, Hoeksema, Bert W., Todd, Peter A. Environmental impacts of dredging and other sediment disturbances on corals: A review. Marine Pollution Bulletin, Vol. 64, Issue 9, 2012, pp. 1737-1765.

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APA Style

Weiqi Chen, Xuelian Meng, Shuisen Chen, Jia Liu. (2018). Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements. Earth Sciences, 7(2), 42-52. https://doi.org/10.11648/j.earth.20180702.11

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ACS Style

Weiqi Chen; Xuelian Meng; Shuisen Chen; Jia Liu. Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements. Earth Sci. 2018, 7(2), 42-52. doi: 10.11648/j.earth.20180702.11

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AMA Style

Weiqi Chen, Xuelian Meng, Shuisen Chen, Jia Liu. Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements. Earth Sci. 2018;7(2):42-52. doi: 10.11648/j.earth.20180702.11

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@article{10.11648/j.earth.20180702.11,
  author = {Weiqi Chen and Xuelian Meng and Shuisen Chen and Jia Liu},
  title = {Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements},
  journal = {Earth Sciences},
  volume = {7},
  number = {2},
  pages = {42-52},
  doi = {10.11648/j.earth.20180702.11},
  url = {https://doi.org/10.11648/j.earth.20180702.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20180702.11},
  abstract = {From July 11-12, 2009, the tropical storm Soudeler swept the study area with a Level 8 wind and disturbed the suspended substance in this coastal area, which may have caused some fatal impact on the health condition of coral reef in Xuwen coral reef coast located in Leizhou Peninsula of South China. In order to evaluate the impact of extreme weather on coral reef, this study applied and validated a TSS model to map the TSS variation based on red and infrared spectral bands of MODIS data through one before-storm and two after-storm images after applying the atmospheric correction of in-water linear regression analysis. By mapping and comparing the changes of TSS values before- and after- tropical storm, this study found substantial increases of TSS concentrations as a mean value of 47.8 mg/L (~3.6 times of mean TSS value before rainstorm) in the area during the passage of tropical storm compared to those under no-storm condition. Besides, the TSS returned back to even lower values five days after the passage of tropical storm as a mean value of 3.6mg/L (~one quarter of mean TSS value (13.4 mg/L) before rainstorm). The conclusion was made that the TSS concentration in estuary and coastal areas under local rainstorm tends to return to a normal level faster (approximately 2.5 days) than under a hurricane [1] or tropical storm as discovered in this study (approximately 5 days). Compared to the less frequent and non-synoptic in-situ field sampling approach, the synoptic and frequent sampling facilitated by frequent remote sensing imagery of MODIS provides an improved assessment of TSS concentration and two-dimensional distribution patterns and is recommended to be used as a valuable tool for frequently monitoring coral reef water quality in coastal water bodies of China and other areas in the world if applicable.},
 year = {2018}
}

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TY  - JOUR
T1  - Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements
AU  - Weiqi Chen
AU  - Xuelian Meng
AU  - Shuisen Chen
AU  - Jia Liu
Y1  - 2018/02/03
PY  - 2018
N1  - https://doi.org/10.11648/j.earth.20180702.11
DO  - 10.11648/j.earth.20180702.11
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 42
EP  - 52
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20180702.11
AB  - From July 11-12, 2009, the tropical storm Soudeler swept the study area with a Level 8 wind and disturbed the suspended substance in this coastal area, which may have caused some fatal impact on the health condition of coral reef in Xuwen coral reef coast located in Leizhou Peninsula of South China. In order to evaluate the impact of extreme weather on coral reef, this study applied and validated a TSS model to map the TSS variation based on red and infrared spectral bands of MODIS data through one before-storm and two after-storm images after applying the atmospheric correction of in-water linear regression analysis. By mapping and comparing the changes of TSS values before- and after- tropical storm, this study found substantial increases of TSS concentrations as a mean value of 47.8 mg/L (~3.6 times of mean TSS value before rainstorm) in the area during the passage of tropical storm compared to those under no-storm condition. Besides, the TSS returned back to even lower values five days after the passage of tropical storm as a mean value of 3.6mg/L (~one quarter of mean TSS value (13.4 mg/L) before rainstorm). The conclusion was made that the TSS concentration in estuary and coastal areas under local rainstorm tends to return to a normal level faster (approximately 2.5 days) than under a hurricane [1] or tropical storm as discovered in this study (approximately 5 days). Compared to the less frequent and non-synoptic in-situ field sampling approach, the synoptic and frequent sampling facilitated by frequent remote sensing imagery of MODIS provides an improved assessment of TSS concentration and two-dimensional distribution patterns and is recommended to be used as a valuable tool for frequently monitoring coral reef water quality in coastal water bodies of China and other areas in the world if applicable.
VL  - 7
IS  - 2
ER  -

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Author Information

Weiqi Chen

Department of Geography and Anthropology, Louisiana State University, Baton Rouge, USA
Xuelian Meng

Department of Geography and Anthropology, Louisiana State University, Baton Rouge, USA
Shuisen Chen

Guangdong Open Laboratory of Geospatial Information Technology and Application, Guangdong Engineering Technology Center for Remote Sensing Big Data Application, Guangdong Key Laboratory of Remote Sensing and GIS Technology Application, Guangzhou Institute of Geography, Guangzhou, China
Jia Liu

Guangdong Open Laboratory of Geospatial Information Technology and Application, Guangdong Engineering Technology Center for Remote Sensing Big Data Application, Guangdong Key Laboratory of Remote Sensing and GIS Technology Application, Guangzhou Institute of Geography, Guangzhou, China

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APA Style

Weiqi Chen, Xuelian Meng, Shuisen Chen, Jia Liu. (2018). Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements. Earth Sciences, 7(2), 42-52. https://doi.org/10.11648/j.earth.20180702.11

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ACS Style

Weiqi Chen; Xuelian Meng; Shuisen Chen; Jia Liu. Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements. Earth Sci. 2018, 7(2), 42-52. doi: 10.11648/j.earth.20180702.11

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AMA Style

Weiqi Chen, Xuelian Meng, Shuisen Chen, Jia Liu. Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements. Earth Sci. 2018;7(2):42-52. doi: 10.11648/j.earth.20180702.11

Copy | Download

@article{10.11648/j.earth.20180702.11,
  author = {Weiqi Chen and Xuelian Meng and Shuisen Chen and Jia Liu},
  title = {Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements},
  journal = {Earth Sciences},
  volume = {7},
  number = {2},
  pages = {42-52},
  doi = {10.11648/j.earth.20180702.11},
  url = {https://doi.org/10.11648/j.earth.20180702.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20180702.11},
  abstract = {From July 11-12, 2009, the tropical storm Soudeler swept the study area with a Level 8 wind and disturbed the suspended substance in this coastal area, which may have caused some fatal impact on the health condition of coral reef in Xuwen coral reef coast located in Leizhou Peninsula of South China. In order to evaluate the impact of extreme weather on coral reef, this study applied and validated a TSS model to map the TSS variation based on red and infrared spectral bands of MODIS data through one before-storm and two after-storm images after applying the atmospheric correction of in-water linear regression analysis. By mapping and comparing the changes of TSS values before- and after- tropical storm, this study found substantial increases of TSS concentrations as a mean value of 47.8 mg/L (~3.6 times of mean TSS value before rainstorm) in the area during the passage of tropical storm compared to those under no-storm condition. Besides, the TSS returned back to even lower values five days after the passage of tropical storm as a mean value of 3.6mg/L (~one quarter of mean TSS value (13.4 mg/L) before rainstorm). The conclusion was made that the TSS concentration in estuary and coastal areas under local rainstorm tends to return to a normal level faster (approximately 2.5 days) than under a hurricane [1] or tropical storm as discovered in this study (approximately 5 days). Compared to the less frequent and non-synoptic in-situ field sampling approach, the synoptic and frequent sampling facilitated by frequent remote sensing imagery of MODIS provides an improved assessment of TSS concentration and two-dimensional distribution patterns and is recommended to be used as a valuable tool for frequently monitoring coral reef water quality in coastal water bodies of China and other areas in the world if applicable.},
 year = {2018}
}

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TY  - JOUR
T1  - Investigating Rainstorm Disturbance on Suspended Substance in Coastal Coral Reef Water Based on MODIS Imagery and Field Measurements
AU  - Weiqi Chen
AU  - Xuelian Meng
AU  - Shuisen Chen
AU  - Jia Liu
Y1  - 2018/02/03
PY  - 2018
N1  - https://doi.org/10.11648/j.earth.20180702.11
DO  - 10.11648/j.earth.20180702.11
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 42
EP  - 52
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20180702.11
AB  - From July 11-12, 2009, the tropical storm Soudeler swept the study area with a Level 8 wind and disturbed the suspended substance in this coastal area, which may have caused some fatal impact on the health condition of coral reef in Xuwen coral reef coast located in Leizhou Peninsula of South China. In order to evaluate the impact of extreme weather on coral reef, this study applied and validated a TSS model to map the TSS variation based on red and infrared spectral bands of MODIS data through one before-storm and two after-storm images after applying the atmospheric correction of in-water linear regression analysis. By mapping and comparing the changes of TSS values before- and after- tropical storm, this study found substantial increases of TSS concentrations as a mean value of 47.8 mg/L (~3.6 times of mean TSS value before rainstorm) in the area during the passage of tropical storm compared to those under no-storm condition. Besides, the TSS returned back to even lower values five days after the passage of tropical storm as a mean value of 3.6mg/L (~one quarter of mean TSS value (13.4 mg/L) before rainstorm). The conclusion was made that the TSS concentration in estuary and coastal areas under local rainstorm tends to return to a normal level faster (approximately 2.5 days) than under a hurricane [1] or tropical storm as discovered in this study (approximately 5 days). Compared to the less frequent and non-synoptic in-situ field sampling approach, the synoptic and frequent sampling facilitated by frequent remote sensing imagery of MODIS provides an improved assessment of TSS concentration and two-dimensional distribution patterns and is recommended to be used as a valuable tool for frequently monitoring coral reef water quality in coastal water bodies of China and other areas in the world if applicable.
VL  - 7
IS  - 2
ER  -

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