Remote sensing assessment of sediment variation in the Pearl River Estuary induced by Typhoon Vicente
Keywords:
typhoon, total suspended solid concentrationAbstract
A MODIS-based algorithm was developed to investigate the impact of Typhoon Vicente on the total suspended solid concentration in the Pearl River Estuary. This algorithm used two high resolution bands at 645 nm and 555 nm to map the concentrations. Regression between the remote sensing reflectance and in situ total suspended solid concentration showed good correlation (R2 = 0.91), indicating that the algorithm was valid for the high turbid waters in the Pearl River Estuary. MODIS-derived maps showed different total suspended solid concentration anomalies in different sub-regions of the estuary during the passage of Typhoon Vicente. In western inlets, the increase of total suspended solids (maximum values of 22.20 g m−3 before and 55.71 g m−3 after the typhoon) was possibly related to the larger rainfall discharge from the Pearl River. In Lingdingyang, the increase of total suspended solids (maximum values of 19.60 g m−3 before and 44.59 g m−3 after the typhoon) might be the result of typhoon-induced resuspension. In the southeastern portion of the Estuary, due to the typhoon-induced current, a significant decrease of total suspended solid area (decreased by 10 g m−3) was observed. Different changes were observed in different sub-regions under the influence of the typhoon, implying the complicated hydrological environment is an important feature in the Pearl River Estuary.
References
Cai, W. J., Dai, M. H., Wang, Y. C., Zhai, W. D., Huang, T., Chen, S. T., Zhang, F., Chen, Z. Z., and Wang, Z. H., 2004. The biogeochemistry of inorganic carbon and nutrients in the Pearl River estuary and the adjacent Northern South China Sea. Continental Shelf Research 24, 1301–1319.
Deng, Y., Solo-Gabriele, H. M., Laas, M., Leonard, L., Childers, D. L., He, G. Q., and Engel, V., 2010. Impacts of hurricanes on surface water flow within a wetland. Journal of Hydrology 392, 164–173.
Eleveld, M. A. Pasterkamp, R., Woerd, H. J. V. D., and Pietrzak, J. D., 2008. Remotely sensed seasonality in the spatial distribution of sea-surface suspended particulate matter in the southern North Sea. Estuarine, Coastal and Shelf Science 80(1), 103–113.
Huang, W. R., Mukherjee, D., and Chen, S. S., 2011. Assessment of Hurricane Ivan impact on chlorophyll-a in Pensacola Bay by MODIS 250 m remote sensing. Marine Pollution Bulletin 62, 490–498.
Huang, X. P., Huang, L. M., and Yue, W. Z., 2003. The characteristics of nutrients and eutrophication in the Pearl River estuary, South China. Marine Pollution Bulletin 47, 30–36.
Li, X., 1993. A united model for quantitative remote sensing of suspended sediment concentration. International Journal of Remote Sensing 14(14), 2665–2676.
Lin, I. I., Liu, W. T., Wu, C. C., Chiang, J. C. H., and Sui, C. H., 2003. Satellite observations of modulation of surface winds by typhoon-induced upper ocean cooling. Geophysical Research Letters 30(3), 1131, doi: 10.1029/2002GL015674.
Liu, F. F., Chen, C. Q., Tang, S. L., and Liu, D. Z., 2009. A piecewise algorithm for retrieval of suspended sediment concentration based on in situ spectral data by MERIS in Zhujiang River estuary. Journal of Tropical Oceanography 28(1), 9–14.
Liu, F. F., Chen, C. Q., Tang, S. L., and Liu, D. Z., 2011. Retrieval of chlorophyll a concentration from a fluorescence enveloped area using hyperspectral data. International Journal of Remote Sensing 32(13), 3611–3623.
Mao, Q. W., Shi, P., Yin, K. D., Gan, J. P., and Qi, Y. Q., 2004. Tides and tidal currents in the Pearl River Estuary. Continental Shelf Research 24, 1797–1808.
Milliman, J. D., Lin, S. W., Kao, S. J., Liu, J. P., Liu, C. S., Chiu, J. K., and Lin, Y. C., 2007. Short term changes in seafloor character due to flood-derived hyperpycnal discharge: typhoon Mindulle, Taiwan, July 2004. Geology 35, 779–782.
Mobley, C. D., 1999. Estimation of the remote-sensing reflectance from above-surface measurements. Applied Optics 38, 7442–7455.
Sheremet, A., Mehta, A. J., Liu, B., and Stone, G. W., 2005. Wave-sediment interaction on a muddy inner shelf during Hurricane Claudette. Estuarine, Coastal and Shelf Science 63(1-2), 225–233.
Wong, J. A., Chen, J. C., Xue, H., Dong, L. X., Su, J. L., and Heinke, G., 2003. A model study of the circulation in the Pearl River Estuary (PRE) and its adjacent coastal waters: 1. Simulations and comparison with observations. Journal of Geophysical Research 108(C5), 3156, doi: 10.1023/2002JC001451.
Zhao, H., Tang, D. L., and Wang, D. X., 2009. Phytoplankton blooms near the Pearl River Estuary induced by Typhoon Nuri. Journal of Geophysical Research 114, C12027, doi: 10.1029/2009JC005384.
Zhao, J., Barnes, B., Melo, N., English, D., Lapointe, B., Muller-Karger, F., Schaeffer, B., and Hu, C. M., 2013. Assessment of satellite-derived diffuse attenuation coefficients and euphotic depths in south Florida coastal waters. Remote Sensing of Environment 131, 38–50.
Published
Issue
Section
License
Manuscripts must be original. They must not be published or be under consideration for publication elsewhere, in whole or in part. It is required that the lead author of accepted papers complete and sign the MSU Press AEHM Author Publishing Agreement and provide it to the publisher upon acceptance.
