On September 7th, Typhoon Capricorn made landfall along the southern coast of Quang Ninh Province, Vietnam, marking its third landfall. Many people think that they can relax their vigilance after the typhoon passes through, but they don't know that its "residual power" still exists. The impact of the spiral rain belt continues to persist in many areas, and even after the typhoon passes through, the effects of the spiral rain belt still exist. Spiral rainbands refer to rain clouds moving around the center of a typhoon, which may cause a "train effect" and result in sustained heavy rainfall in the same area. The train effect refers to a series of convective clouds that successively affect the same place, just like different carriages of a train passing through the same track. As a result, there will be heavy rainstorm or even extremely heavy rainstorm for many consecutive days in the same place. On the afternoon of the 7th, multiple spiral rain bands have formed on the east and north sides of Typhoon Capricorn, continuing to affect the southern region of China. The Central Meteorological Station predicted that on the 7th and 8th, some regions in Guangxi, Yunnan and other regions will still have heavy rainfall, local heavy rainstorm. There is a high possibility of flash floods in some areas, and we still need to be vigilant. Typhoon passing low pressure may cause tinnitus and dizziness. After Typhoon Capricorn passes, some people may experience nausea, dizziness, and tinnitus. Experts say that in fact, the closer to the center of the typhoon, the lower the pressure will be. The central pressure of Capricorn this time is approximately 930 hectopascals, while the normal standard atmospheric pressure is 1015 hectopascals. In the area where the eye of a typhoon passes, the atmospheric pressure will abnormally decrease, so some people may experience feelings such as tinnitus, dizziness, and nausea. After the typhoon eye passes, the air pressure will gradually return to normal, and the public does not need to worry too much. Regarding water safety, it is important to remember that after a typhoon passes, attention should also be paid to water safety. The main causes of water pollution caused by typhoons include: interruption of centralized water supply, severe damage to water supply facilities, siltation of water pipes, and cracking of well pipes. The chemicals in various chemical plants, chemical warehouses, chemical stores, as well as pesticides stored in agricultural supply stores and households caused by disasters are exposed to the environment and pollute water sources. There is sewage, garbage, and feces around the water source. Pathogenic microorganisms transmitted through water. In addition, with the passage of the typhoon, a large number of oysters appeared on beaches in many places. Residents carry water buckets, burlap bags and other tools to "rush to the sea" to pick them up. Experts remind that these oysters should be avoided as some seafood may spoil and carry a large amount of pollutants and harmful substances. (New Society)
Edit：HAN ZHUOLING Responsible editor：CAICAI
Source：gmw.com
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