Group 1 - A significant rain belt along the Yangtze River has caused frequent rainfall in the Sichuan-Chongqing and Jiangsu-Anhui regions, with rainfall intensity varying greatly and localized heavy downpours observed [1] - Monitoring data indicates that from the 9th, areas in eastern Sichuan, Chongqing, and Hubei experienced rainfall between 50 to 100 millimeters, with localized areas in Chengdu and Deyang reaching 253 to 349 millimeters [1] - Meteorological experts predict that from the 11th to the 12th, the rain belt will persist, with parts of Sichuan, Chongqing, northern Guizhou, northern Yunnan, Hubei, northern Hunan, Anhui, and Jiangsu expected to experience heavy to extremely heavy rainfall [1] Group 2 - Different types of rainfall can trigger geological disasters, with short-duration heavy rainfall leading to rapid surface runoff that can cause mudslides and shallow landslides due to soil saturation [2] - Continuous rainfall allows water to seep into deeper soil layers, increasing the weight of the rock and soil, which can lead to deep landslides when the friction between layers is weakened [2] - The risk of landslides does not cease immediately after rainfall, as water continues to infiltrate the soil, potentially leading to landslides days after the rain has stopped [2]

记者从中国气象局了解到，目前中国气象局已成功研制1公里空间分辨率的滑坡、泥石流地表风险区划产品，并在国家气象中心业务平台实现集成应用，核 心目标在于科学解答"哪里容易发生滑坡、泥石流"这一关键问题。 35°N 30°N . 40°N 该产品整合了地形、地质、土壤、植被、水文及人类活动等六大类共16种下垫面孕灾环境因子数据。研发团队通过严谨的校正配准、统一坐标、矢量转换、 重分类与重采样等标准化流程，构建了可全面刻画全国地表环境空间异质性的孕灾环境特征数据集。 基于已知的地质灾害点或隐患点信息，该产品智能分析这些下垫面孕灾环境特征，从而在全国范围内客观识别出滑坡和泥石流的潜在易发区域，并以1公里 分辨率的正交网格为基本单元覆盖全国范围，提供了统一、精细的空间区划。未来，该产品还将定期滚动更新，充分纳入新收集的灾害点和隐患点信息，不 断优化地表风险识别区划结果。 （总台央视记者 吴薇） ...