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Sci Bull (Beijing). 2016;61:330-337. Epub 2016 Feb 2.

Wind estimation around the shipwreck of Oriental Star based on field damage surveys and radar observations.

Author information

1
Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871 China.
2
National Meteorological Center, Beijing, 100081 China.
3
School of Atmospheric Sciences, Nanjing University, Nanjing, 210023 China.

Abstract

in English, Chinese

Based on observational analyses and on-site ground and aerial damage surveys, this work aims to reveal the weather phenomena-especially the wind situation-when Oriental Star capsized in the Yangtze River on June 1, 2015. Results demonstrate that the cruise ship capsized when it encountered strong winds at speeds of at least 31 m s-1 near the apex of a bow echo embedded in a squall line. As suggested by the fallen trees within a 2-km radius around the wreck location, such strong winds were likely caused by microburst straight-line wind and/or embedded small vortices, rather than tornadoes.

KEYWORDS:

Bow echo; Damage survey; Drone; Microburst; Squall line; Tornado

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