Results 11 to 20 of about 1,804 (183)
Shuitu Baochi Xuebao, 2021 2019年8月10日6时至12日6时，受台风"利奇马"影响，山东淄博、东营、潍坊等地区发生特大暴雨天气，造成了严重的水土流失灾害。暴雨发生后，水利部水土保持监测中心组织调查人员，运用现代技术手段对暴雨中心典型小流域进行了系统、全面的水土保持实地调查。结果表明：（1）本次特大暴雨降雨量为570.6 mm，最大24 h降雨507.6 mm，均超过历史记录；（2）本次暴雨造成严重水土流失灾害，典型小流域水蚀模数达9 741 t/km2，是多年平均值的2.4倍，梯田损毁率达5.96%，河道淤积厚度达10~30 ...
林祚顶 +6 more
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Tropical and subtropical Asia's valued tree species under threat
Conservation Biology, Volume 36, Issue 3, June 2022., 2022 Abstract Tree diversity in Asia's tropical and subtropical forests is central to nature‐based solutions. Species vulnerability to multiple threats, which affect provision of ecosystem services, is poorly understood. We conducted a region‐wide, spatially explicit assessment of the vulnerability of 63 socioeconomically important tree species to ...
Hannes Gaisberger +72 more
wiley +1 more source
Key n‐Gram Extractions and Analyses of Different Registers Based on Attention Network
Journal of Applied Mathematics, Volume 2021, Issue 1, 2021., 2021 Key n -gram extraction can be seen as extracting n‐grams which can distinguish different registers. Keyword (as n = 1, 1‐gram is the keyword) extraction models are generally carried out from two aspects, the feature extraction and the model design.
Haiyan Wu +5 more
wiley +1 more source
Wireless Communications and Mobile Computing, Volume 2020, Issue 1, 2020., 2020 An excellent dialogue system needs to not only generate rich and diverse logical responses but also meet the needs of users for emotional communication. However, despite much work, these two problems have not been solved. In this paper, we propose a model based on conditional variational autoencoder and dual emotion framework (CVAE‐DE) to generate ...
Zhenrong Deng +5 more
wiley +1 more source
Research of rainstorm event disaster hazard assessment method-A case study of "8·12" rainstorm event in Xiaogan City [PDF]
, 2023 The assessment of disaster-causing hazards for the rainstorm event is a fundamental and key aspect of assessing the risk of rainstorm disasters, which can provide essential technical support for meteorological disaster prevention and mitigation.
Fen WANG +6 more
core +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2015 应用自动站和NCEP 1°×1°再分析资料，对2010年7月24日发生在东南沿海的一次大暴雨过程的湿位涡场进行了诊断分析.结果表明：鞍形场低层东南风低空急流输送的暖湿气流和对流层中低层来自东北方向的冷空气相互交汇是此次大暴雨发生的触发因子，大暴雨期间暴雨区上空对流层中低层等θse线较稀疏且陡立，大气对流稳定度较低，有利于湿斜压涡度发展，大暴雨发生在600 hPa上MPV、MPV1和MPV2正负过渡带附近，MPV1下负上正垂直叠加配置是暴雨发生发展的有利形势，湿位涡在900 hPa以下具有MPV1为负 ...
ZHANGLingjie(张灵杰)
doaj +1 more source
Shuitu Baochi Xuebao, 2022 为有效防治流域土壤侵蚀、维护生态安全，基于九曲水流域1982—2019年逐日降雨数据，运用小波分析、交叉小波变换等方法分析了中雨、大雨、暴雨及年降雨侵蚀力的年际变化规律，并探讨了太阳黑子、厄尔尼诺—南方涛动（ENSO）、北极涛动（AO）及太平洋年代际涛动（PDO）对它们的影响。结果表明：（1）中雨、大雨、暴雨及年降雨侵蚀力的年际变化趋势均不显著（p>0.05），其变异系数（CV）分别为0.24，0.31，0.64，0.26，均属于中等变异。（2）不同量级降雨侵蚀力的周期变化差异明显 ...
李俊 +4 more
doaj
Analysis of heavy rain caused by typhoon "Fitow" in Huzhou(台风“菲特”引发湖州大暴雨的成因分析)
Zhejiang Daxue xuebao. Lixue ban, 2014 利用MICAPS资料和中小尺度地面自动站资料，对2013年10月6~8日台风“菲特”影响湖州地区时的大暴雨过程进行分析发现，大暴雨降水分3个阶段：台风“菲特”外围云带中的强降雨、台风本体范围及边缘的暴雨和台风“菲特”减弱后的倒槽和北上近海转向的台风“丹娜丝”外围东北气流的叠加暴雨.分析可知，东北急流带来的充沛水汽、高能高湿的能量输送、强烈的上升运动和高层辐散低层辐合等为大暴雨的发生发展提供了十分有利的环境场.天荒坪山区朝东北开口并由东北向西南多级收缩抬升的地形为暴雨的增幅创造了有利条件 ...
SUNJianming(孙建明) +3 more
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Advances in the studies of turbulence properties in the cloud and the role of turbulence in cloud and precipitation [PDF]
, 2023 Turbulence is an unregular atmospheric motion. Through increasing the collision efficiency of cloud droplets and accelerating the growth rate of cloud droplets, it plays an important role in the processes of cloud and precipitation formation and ...
Lei TIAN +4 more
core +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2014 基于Micaps常规资料、NCEP再分析资料和中尺度自动站雨量资料，结合WRF高精度数值模拟输出的诊断物理量，研究了 2013年10月7日20：00至8日08：00发生于浙江东北部的短时大暴雨天气过程的成因.结果表明：这次大暴雨过程主要由台风“菲特”残留云系、超强台风“丹娜丝”和北方的弱冷空气共同影响产生；假相当位温及地面风场的分布很好地反映了此次大暴雨过程中的不稳定强对流及冷暖空气交汇的形势.垂直螺旋度、湿位涡的分布及演变情况与强降水的移动及强度变化有很好的对应关系 ...
FANXiaohong(范晓红) +2 more
doaj +1 more source