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台风“沙德尔”趋向浙闽沿海气象专家：建议持续做好台风灾害防御_我的网站

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一 | (ECNS) -- An 11.6-kilometer offshore steel trestle bridge, the longest of its kind currently under construction in China, was fully connected on Tuesday in Dalian, located in China's northeastern Liaoning Province. The steel trestle bridge is a key supporting facility for the Dalian Changhai Bridge project. Changhai County, China's only island border county, has long relied on maritime transport. However, ferry services are suspended for more than 60 days each year due to tides, strong winds and heavy fog, while round-the-clock navigation is unavailable even when services are operating. These limitations have restricted residents' mobility and hindered local economic development. The Changhai Bridge project stretches 25.5 kilometers across the Lichangshan Strait, linking Dachangshan Island in Changhai County with the mainland at Pikou Port in Pulandian District. Once completed, the bridge is expected to end the county's long-standing dependence on maritime transport. Construction in the Yellow Sea has posed significant challenges due to frequent changes in wind, waves and tides, as well as shallow waters that prevent conventional construction vessels from operating. To overcome these difficulties, the project team built the steel trestle bridge as a key support facility. Serving as the main transport route for construction materials, heavy machinery and personnel, it acts as a "lifeline" for offshore construction, according to the project team. Ni Jiaming, project manager for the third section of the Changhai Bridge project under China State Construction Engineering Corporation (CSCEC), said the steel trestle bridge required 3,431 piles and 67,000 metric tons of steel. Construction was completed in 423 days, 10 days ahead of schedule. Gong Baokai, deputy chief commander of the Dalian Changhai Bridge project under China State Construction Eighth Engineering Division, said completion of the trestle bridge has helped overcome construction difficulties in shallow waters, significantly improving the efficiency of transporting materials and personnel while reducing offshore construction risks. Its connection also marks the southern section of the Changhai Bridge project entering the main foundation construction phase. The Changhai Bridge is expected to open to traffic in 2029. (By Tang Yuxian) 。 AI摘要台风“沙德尔”趋向浙闽，福建提升防汛应急响应。福州未来一周晴雨交替，27日高温达38℃，多日有强降雨。专家提醒防范次生灾害，预计9至11月影响福建台风2至3个，强度偏强。 8月25日，记者从气象部门获悉，今年第18号台风“沙德尔”趋向浙闽沿海。市民要及时关注预警信息。未来福州“晴雨交替” 来自中央气象台的消息，台风“沙德尔”预计于8月26日凌晨移入东海东部，之后移速减慢，转向西偏南方向移动，逐渐向浙闽沿海靠近，将于8月27日夜间至28日上午在浙江象山到福建福清一带沿海登陆（12至14级，台风级或强台风级）。福建省气象台于8月25日14时将暴雨预警提升为Ⅰ级，福建省防指于8月25日14时将防汛应急响应提升为二级，并维持防台风四级应急响应。福州市气象台于8月25日12时发布台风预警Ⅳ级，福州市防指于8月25日12时30分启动防台风Ⅳ级应急响应并维持防汛Ⅲ级应急响应。根据福州气象部门预测，未来一周福州市区天气受台风影响，呈现“多雨持续、高温收敛”的特点。气温方面，整体处于26℃至38℃区间，8月27日最高气温预计冲至38℃，为本周峰值；其余时段高温多在32℃至34℃徘徊，低温稳定在26℃至28℃，体感闷热略有缓解。降雨方面，受台风影响，8月25日以及8月27日至31日均有明显降雨。其中，8月25日、28日雨势较强，仅8月26日短暂转为停歇。这种“晴雨交替”既带来短时降温，也易因湿度叠加而加剧体感不适。气象部门提醒：受前期持续降水影响，土壤含水量已趋于饱和，本轮强降雨极易诱发中小河流洪水、山洪、城乡低洼区域内涝，以及山体滑坡、塌方、泥石流等次生灾害；海边风浪较大，人们切勿前往岸边观浪，滨海游乐项目需及时关停。专家解答“台风三问” 25日，记者就市民关心的关于台风的问题采访了气象专家。问题一：今年西太平洋台风为何如此活跃？据国家气象中心统计，今年截至目前，西北太平洋已有21个台风生成，较历史同期偏多。西北太平洋海温偏高、季风槽强盛是今年台风活跃的关键驱动因素。

二 | 福建省气候中心高级工程师曹蓉表示，虽然西北太平洋台风生成活跃，但这并不意味着影响福建的台风必然偏多。

三 | 今年截至目前，共有4个台风影响福建，属正常水平。问题二：为何今年远洋台风频繁出现？据国家气候中心监测预测，当前赤道中东太平洋海表温度持续升高，将形成一次超强厄尔尼诺事件。在厄尔尼诺发展年，西北太平洋台风生成源地向海区东南部偏移，该海域低层气旋性涡度强、垂直风切变小、海表温度高，有利于远洋台风生成。

四 | 远洋台风更易发展为强至超强台风，且路径不确定性大。问题三：厄尔尼诺背景下，后续影响及登陆福建的台风还多吗？在厄尔尼诺快速发展的海洋气候背景下，预计9月至11月影响及登陆福建的台风总数为2至3个。整体数量与常年基本持平，台风整体强度偏强，风雨影响较为显著。当前，强盛带状副热带高压稳定盘踞于华中、华东上空，将引导台风“沙德尔”趋向浙闽沿海登陆，给福建带来新一轮风雨影响。气象专家提醒，台风“简拉维”“沙德尔”接连影响福建，整体风雨影响时间长，间歇期较短，建议持续做好台风灾害防御。（记者林舒颖郑瑞洋通讯员廖玥）。