( 5 ) the spring greenland sea - ice extent is larger ( smaller ) : then during the following summer the high of the japanese sea is stronger ( weaker ), and the low of the asian land is stronger ( weaker ), which make the pattern of low west and high east easily ( uneasily ) form ; the ascending movement over north china is strengthened ( weakened ) ; the summer monsoon of east asia is stronger ( weaker ), then the southeastern, warm and damp airflow towards the north china is stronger ( weaker ), and the cold airflow of the high level over the north china is also stronger ( weaker ), which make the convergence of the cold and warm air over north china easily ( uneasily ) form ; the sst of the east pacific ocean is lower ( higher ), while the sst of west wind drift is higher ( lower )
( 5 )春季格陵蘭海冰面積偏大(小) :後期夏季日本海高壓偏強(弱) ,而大陸上低壓也偏強(弱) ,易(不易)形成西低東阻的形勢;華北地區的上升運
動增強(減弱) ;東亞夏季風偏強(弱) ,向華北地區輸送的西南暖濕氣流偏強(弱) ,而對應高空華北地區上空冷空氣活
動偏強(弱) ,利於(不利於)華北上空冷暖空氣的交匯;夏季赤道東太平洋海溫偏低(高) ,西風漂流區海溫偏高(低) 。在以上的環流背景下,華北夏季降水偏多(少) ,易
澇(旱) 。
Abstract : this paper introduces the main applied accomplishment in flood disaster is quick - reporing system by remole sensing based on network for chinese flood monitoring and assessment in 1998. it includes the following aspects : monitor flood dynamically, assess the losses of crops, analyze the efficiency of the flood - preventing projects, analyze the surveying results for dangerous regions, monitor flood in cities, evaluate the vulnerability of the life - line projects and industry areas, analyze the necessity of flood eater - storage and flood - diversion for the floods in changjiang river ; finally, it gives some proposals for decision making in prevebtubg flood and mitigating harzard and function - zoning planning for rebuilding of homestead after hazard etc
文摘:介紹了基於網路的洪
澇災害遙感速報系統在1998年全國特大洪
澇災害監測評估中的主要應用成果,包括
動態監測、農作物損失評估、防洪工程有效性分析、險工險段調查分析、城市洪災監測、工業區生命線工程易損性評估、長江洪水蓄洪分洪必要性分析、防洪減災決策建議和災后重建家園功能分區規劃等
This paper introduces the main applied accomplishment in flood disaster is quick - reporing system by remole sensing based on network for chinese flood monitoring and assessment in 1998. it includes the following aspects : monitor flood dynamically, assess the losses of crops, analyze the efficiency of the flood - preventing projects, analyze the surveying results for dangerous regions, monitor flood in cities, evaluate the vulnerability of the life - line projects and industry areas, analyze the necessity of flood eater - storage and flood - diversion for the floods in changjiang river ; finally, it gives some proposals for decision making in prevebtubg flood and mitigating harzard and function - zoning planning for rebuilding of homestead after hazard etc
介紹了基於網路的洪
澇災害遙感速報系統在1998年全國特大洪
澇災害監測評估中的主要應用成果,包括
動態監測、農作物損失評估、防洪工程有效性分析、險工險段調查分析、城市洪災監測、工業區生命線工程易損性評估、長江洪水蓄洪分洪必要性分析、防洪減災決策建議和災后重建家園功能分區規劃等
On the whole, vetiver showed much adaptation to flooding in morphology and physiology and had strong resistance to flooding. so vetiver is an amphibious plant and could be planted along river banks and reservoir banks where water levels fluctuate
總之,在淹水條件下香根草在形態和生理上都出現了適應性的變化,抗
澇性極強,具有兩棲特性,可考慮在水庫庫岸、河岸等水位易波
動地區種植。
The nature driving factors were precipitation gradually lowered, air temperature gradually raised, and evaporation exceeding precipitation
吉林省西部降雨量逐漸減少,蒸發量遠大於降雨量,氣溫逐漸升高,是旱
澇災害逐漸加重的自然驅
動力。
Perhaps it is humankind ' s long suffering at the mercy of flood and drought that makes the ideal of forcing the waters to do our bidding so fascinating
可能正是長期以來人類遭受旱
澇擺布的苦難使得人們治理江河供我驅策的理想如此
動人心魄。
The dry / wet changes of surrounding area of bohai sea during past 500 years are divided into 7 stages, based on dry / wet indexes ( d / w ) of this area from 1470 to 1985 then, the changes of dry / wet spatial types ( d / wst ) and its related dry / wet regional different iation ( d / wrd ) features among different stages are analyzed. the results show that there are 4 main kinds of d / wst in this area, whose notability and spatial distribution features in different stages are apparently different, which reflects, very well, the changing process of the d / wrd of this region in past500 years. further analysis also presents that, in warmer period, the d / wst and the d / wrd patterns are relatively unsteady, meanwhile, the dry / wet changing difference among different parts of the region is relatively great, but, in colder period, it is just on the contrary. however, in the most severely cold period of the little ice age, t he area ' s d / wst and the d / wrd pattern sareveryu nsteady, and its d / wrd extenti salsot he high estin the whole past 500 years
用研究區1470 1985年的旱
澇等級資料,劃分了該地區500年來旱
澇變化的7個階段,討論了不同階段間旱
澇型的變化及其旱
澇區域分異意義,結果表明, 500年來研究區有4類主要旱
澇型,各型旱
澇在不同階段的重要程度及場型特徵均有較大差異,深刻反映了該地區500年來旱
澇區域分異特徵的變化,通過對500年來旱
澇變化與溫度變化的對比發現,較溫暖期,研究區的旱
澇型及旱
澇區域分異格局較多變,旱
澇變化的區域差異性較大,較寒冷期,旱
澇型及區域分異格局較穩定,旱
澇變化的區域差異性較小,而在小冰期最寒冷階段,旱
澇型及旱
澇區域分異格局的變
動十分頻繁,旱
澇變化的區域差異性亦最大
According to the annual production program, predictted the subsidence by probability - integral method, and then advanced the method that restore the irrigation and draining function of the water system on the ground in the subsidence area, it is changing route of ditch and river system reconstruction
根據張集礦年度開采計劃,對礦區未來可能產生的開采沉陷採用概率積分法進行預計,根據預計結果提出了塌陷區內水系灌溉排
澇功能的
動態恢復治理方案,即水渠改道和水系重建。
To counter the above mentioned problems, this thesis is based on the practical situation of pump station operation to analyse its operation cost. the operation cost of pump stations consists of fixed and variable parts. to find the fixed and variable cost, the idea of investment allotment method ( iam ) is introduced to obtain the depreciation cost which is the main part of fixed cost
本論文針對上述兩方面問題,從我國大型泵站實際情況出發,對具有雙重功能? ?供水(含灌溉) 、排
澇功能的泵站進行成本分析,提出投資分攤方法來解決固定成本中的固定資產折舊費問題,而用優化調度手段來推求泵站運行成本中的變
動成本核心? ?抽水耗電費用。
Unhcr, for the first time in a humanitarian crisis, was entrusted with the role of general coordinator for a vast relief operation which allowed millions of people to survive in 800 camps despite monsoon rains and flooding
聯合國難民署第一次在人道主義危機中被委任為總協調員的角色,負責協調規模巨大的救濟活
動,使800個難民營中的數百萬人度過雨季和洪
澇災害,生存下來。
Under the guidance of the chinese communist party and the government, people in the flooded regions are keeping up their hard work and spirit of independence to accelerate reconstruction and minimize losses from the flood so that we may fully recover from the disaster and repay your kind assistance with real actions. regards,
當前,我市災區人民正在各級黨委政府的領導下,發揚自立更生艱苦奮斗的精神,迅速恢復生產,重建家園,決心盡最大努力減少洪
澇災害所造成的損失,奪取抗災救災的全面勝利,以實際行
動回報你們對災區人民的關懷和幫助。
Knowledge of atmospheric water vapor are related to many aspects such as rainstorm forecast, preventing and managing of droughts and floods, protecting and improving of ecology and environment and so on
摘要大氣中水分的生成、活
動關聯降水預報、旱
澇防治、保護和改善生態環境等方面。
People ' s governments at all levels should organize departments and units concerned and mobilize social forces to ensure flood control and flood fighting and reconstruction and relief work after flood or waterlogging calamities
各級人民政府應當組織有關部門、單位,動員社會力量,做好防汛抗洪和洪澇災害后的恢復與救濟工作。