Drift characteristics of green macroalgae in the Yellow Sea in 2008 and 2010

Qiao, Fangli; Wang, GuanSuo; Lü, Xingang; Dai, Dejun

doi:10.1007/s11434-011-4551-7

Cited by 74 publications

(39 citation statements)

References 15 publications

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“…The sediment properties were not measured during the observations and thus, the thermal diffusivity was assumed as 0.0022 cm 2 /s (Rajan and Frisk, 1992). The time series bottom-water temperature (with a bias of 2.7 C removed) of the MASNUM (Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration) wave-tide-circulation coupled ocean model (Qiao et al, 2011) was found consistent with the observations [ Fig. 1(b)].…”

Section: Sediment Temperature Increase Induced By Typhoon's Passagementioning

confidence: 55%

Coastal sound-field change due to typhoon-induced sediment warming

Yang

Lü

Wang

et al. 2016

The Journal of the Acoustical Society of America

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Typhoon induced sediment warming has been proven important to coastal sound-field change in this study. It was observed that the temperature of the bottom waters off the coast of Qingdao increased by 5 °C after the passage of typhoon Damrey in 2012. Sediment warming due to bottom-water temperature increase was calculated and the change in sediment sound speed was estimated. Transmission loss (TL) was simulated both with and without consideration of the change in sediment sound speed induced by temperature variation and results showed TL change could be >10 dB within a distance of 16 km.

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Section: Sediment Temperature Increase Induced By Typhoon's Passagementioning

confidence: 55%

Coastal sound-field change due to typhoon-induced sediment warming

Yang

Lü

Wang

et al. 2016

The Journal of the Acoustical Society of America

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“…Green tides generated in the Yellow Sea along the coast of China move from the south to the north by riding the wind-driven surface layer currents (Liu et al, 2009;Keesing et al, 2011;Lee et al, 2011;Qiao et al, 2011;Son et al, 2015). Choi et al (2010) (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The maximum effect range of green tides can extend to tens of thousands of square kilometers (Keesing et al, 2011), and thus, satellites can be effectively used to detect them (Hu, 2009 Shi and Wang, 2009;Choi et al, 2010;Liu et al, 2010;Keesing et al, 2011;Lee et al, 2011;Cui et al, 2012;Son et al, 2012;Xing et al, 2015;Xing and Hu, 2016), Floating Algae Index (FAI, Hu, 2009;Hu et al, 2010;Lee and Lee, 2012;Xing and Hu, 2016), Enhanced Vegetation Index (EVI, Hu, 2009;Son et al, 2012;Son et al, 2015), Virtual-Baseline Floating macroAlgae Height (VB-FAH, Xing and Hu, 2016), Floating Green Algae Index (FGAI, Lee and Lee, 2012), Index of floating Green Algae for GOCI (IGAG, Son et al, 2012;Son et al, 2015), and the visual interpretation of false color images (Lü and Qiao, 2008;Zhang et al, 2013). While these methods differ in terms of the resolution at which green tide can be quantified, they are all capable of identifying the presence of these algae accurately.…”

Section: Introductionmentioning

confidence: 99%

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Tracking the Movement and Distribution of Green Tides on the Yellow Sea in 2015 Based on GOCI and Landsat Images

Min¹,

Oh²,

Hwang³

et al. 2017

Korean Journal of Remote Sensing

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: Green tides that developed along the coast of China in 2015 were detected and tracked using vegetation indices from GOCI and Landsat images. Green tides first appeared near the Jiangsu Province on May 14 before increasing in size and number and moving northward to the Shandong Peninsula in mid-June. Typhoon Cham-hom passed through the Yellow Sea on July 12, significantly decreasing the algal population. An algae patch moved east toward Korea and on June 18 and July 4, several masses were found between the southwestern shores of Korea and Jeju Island. The floating masses found in Korean waters were concentrated at the boundary of the open sea and the Jindo cold pool, a phenomenon also observed at the boundary of coastal and offshore waters in China. Sea surface temperatures, derived from NOAA SST data, were found to play a role in generation of the green tides.

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“…20 Due to different measurement and comparison methods, scholars have hypothesized different ranges in error for green tide monitoring. Qiao et al 23 argued that the monitoring error is at the magnitude level, whereas Zhong et al 24 found that the error is ∼30% by comparing results extracted using the Chinese HJ-1 charge-coupled device (HJ-1 CCD) with the MODIS monitoring results.…”

Section: Introductionmentioning

confidence: 99%

Validation of MODIS-based monitoring for a green tide in the Yellow Sea with the aid of unmanned aerial vehicle

Gao

Shang

et al. 2017

J. Appl. Remote Sens

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Abstract. Previous studies have shown that Terra moderate resolution imaging spectroradiometer (MODIS) has low detection and characterization efficiency when mapping a green tide (Ulva prolifera) in the Yellow Sea. To quantify the uncertainty in mapping of the green tide using MODIS data, comparisons were conducted between quasi synchronous MODIS images and in situ observation data, as well as an unmanned aerial vehicle (UAV) image. The results show that MODIS images could detect the location of large (>100 m) floating green algae patches with good positional accuracy but tended to ignore the existence of small patches less than 10 m in width. The floating macroalgae area extracted using MODIS was several times larger than the area mapped using the UAV image. The Sentinel-2 multispectral instrument, the Chinese highresolution GF-1 wide field camera, and the Chinese HJ-1 charge-coupled device are recommended for early green tide detection, whereas MODIS is suitable for green tide monitoring. The UAV could also play an important role in regional green tide monitoring with the advantages of flexibility, smaller dimensions, high spatial resolution, and low cost.

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Drift characteristics of green macroalgae in the Yellow Sea in 2008 and 2010

Cited by 74 publications

References 15 publications

Coastal sound-field change due to typhoon-induced sediment warming

Coastal sound-field change due to typhoon-induced sediment warming

Tracking the Movement and Distribution of Green Tides on the Yellow Sea in 2015 Based on GOCI and Landsat Images

Validation of MODIS-based monitoring for a green tide in the Yellow Sea with the aid of unmanned aerial vehicle

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