低雨量地區 的英文怎麼說
中文拼音 [dīyǔliángdeqū]
低雨量地區
英文
low-rainfall area-
The result shows that : the sand - dust storm occured in favorable climate background that is drought and rainless, the tilted trough and mongolia cyclone are the important weather systems that caused the severe sand - dust storm, tilted trough and strong frontal zone caused the mongolia cyclone developed and the clod front strengthened at surface, high jet and ferrel circulation are the main reason that momentum spreaded downward from higher level and frontal zone strengthened on lower level
結果表明：沙塵暴是在乾旱少雨的有利的氣候背景下產生的。斜壓槽和蒙古氣旋是觸發這次強沙塵暴天氣過程的重要的天氣系統，高空斜壓槽和強鋒區促使了地面蒙古氣旋的發展和冷鋒的加強，誘發沙塵暴天氣。高空急流及其下方的ferrel環流起到了高層動量下傳和加強低層鋒區的重要作用。By surveying the sample plot, the relations between the stabil ity of the mountai n slope of soil preparation for planting by using explosion and other factors s uch as precipitation, terrain ， were studied. by using the method of quantitative t heory i, the interrelation between the damaged degrees of soil preparation progra ms by using explosion in low mountain area with abundant precipitation and terrain factors was systematically analysed, and the mathematical models relate d were developed. the results show that the precipitation in early days and the m aximum precipitation per day are the primary factors causing the soil prepara tion program damaged. the main terrain factors of the mountain slope that affect the program stability are according to their importance, slope, position and dir ection. the suitable mountain slope for soil preparation by using explosion is th e slope of less than 25
通過典型標準樣地調查資料，探討了造林爆破整地工程的坡地穩定性與降水、地形等因子的相互關系，應用數量化理論，對在有充分降水條件下的低山丘陵區的爆破整地工程損失程度與地形因子之間的關系進行了系統分析，並建立了相應的數學模型，研究指出，充分的前期降水和日最大降雨量是引起爆破整地工程損失的激發因素；影響爆破整地工程穩定性的主要地形因子是地面坡度，其次為坡位、坡向，實施爆破整地工程的地面坡度以不超過25為宜。However, it lacks runoff data in absolutely most areas where culvert and small bridge locate. some traditional design method, such as the methods of statistic zone parameter, modification by catchment area, rainfall - runoff, reasoning formula and empiric equation et al, are used to estimate flood flow through culvert or bridge
然而，絕大多數中小橋涵所在地卻沒有可利用的徑流資料，通常採用統計分區法，面積改正法、暴雨徑流法、推理公式和經驗公式等傳統設計方法，這些方法一般比較繁瑣、精度較低、設計的流量偏大，導致工程造價偏高而浪費資金。The analysis of the large - scale synoptic situation shows that strong precipitation is closely related to the explosion of monsoon and the intensification of cross - equatorial flow which bring a lot of vapor and meet with cold masses at the eastern of northwest district on 8th, june causing extremely heavy rainfall ; that subtropical high - level jet at 200hpa, subtropical high at 500hpa and low - level jet at 850hpa are the weather backgrounds favorable to strong precipitation ; that the pattern of eastern highs and western lows and the establishment of a low - level jet and the coupling between upper - and low - level patterns that determine that the rain occurred in the east of the northwest china ( on average, this is the rainy season for the south of china, but not for the northwest china ) ; that water vapor comes from southerly and easterly flow which converge at the eastern of northwest district with convergence mainly in lower levels and pbl ; that the high value of the whole - level apparent heat source < q1 > is near the area of large rainfall in the direction of northeasterly - southwesterly agreeable to shear line very well and the condensation latent heat releasing is main heat source with vertical advection item playing key role in q1 and q2 ; that there is a vertical secondary circulation crossing low - lever jet whose ascending branch is at the area of large rainfall ; that the construction of convection instability and conditional symmetry instability results that there is not only deep thermal instability, but also moisture influx and triggering mechanism of thermal instability causing strong torrential rain
作為對比，本文還對2002年6月24 - 25日發生在北京地區的強地形雨進行了分析，並討論陜南、北京地區兩地暴雨的異同點以及地形作用的共性和個性，為兩地暴雨預報提供有益的參考，得出了一些很有意義的結果： 1大尺度環流背景分析表明： （ 1 ） 「 02 . 6 」強降水與6月上旬越赤道氣流和季風爆發密切相關，攜帶大量水汽的偏南氣流與冷空氣於6月8日交匯在西北地區東部，導致了這次強降水的發生； （ 2 ） 200hpa的副熱帶西風急流、 500hpa副高以及850hpa的低空急流的配置非常有利於本文分析之陜西強降水的發展與維持。大尺度形勢分析表明，東高西低形勢場、低空急流的建立和高低空形勢的配置決定了這場降雨出現在西北地區東部。與暴雨區相聯系，存在一支橫越低空急流的經向垂直環流，暴雨區處于該垂直環流的上升支； （ 3 ）偏南和偏東氣流水汽通道在西北地區東部交匯，水汽的輻合積聚主要在對流層低層和行星邊界層內完成； （ 4 ）整層的視熱源< q _ 1 >高值區在暴雨區附近呈東北-西南向分佈，與切變線走向非常一致，降水產生的凝結潛熱釋放是強降水區大氣的主要熱源。Garrigue scrub woodland a secondary formation derived from the original mixed forest, characteristic of limestone areas of the mediterranean region, with low rainfall and thin, dry soils
咖里哥宇群落：是（地中海區常綠矮灌木）多矮小植物，起源於原始混合森林的次級群落，該群落具有的低降雨量及稀薄幹燥的土壤，是地中海石灰巖地區的特徵。Since central yunnan province is on the watersheds of the jinsha river, the zhujiang river, the honghe river, the lancang river, the rivers in this area are short and their flows are small, and further more the area is in low precipitation area of yunnan province, the useable water resources in this area is very limited
然而，由於處于金沙江、珠江、紅河、瀾滄江的分水嶺上，源短流小，加上本身處于雲南省降雨低值區，滇中地區可利用水資源量十分有限，缺水已嚴重影響了滇中地區社會經濟的可持續發展和河湖的生態環境。In 1999, the dipole existed in between the okhotsk high and the depression in the north of northeast china, thus the okhotsk high became active and maintained, the subh was located to an area quite further south than usual. the high persisted in the east region of nw china, the cold air flowed to the mid - lower reaches of the yangtze river along the high. in the east region of nw china, air steam under troposphere was strong sinking motion, and formatted the negative vorticity region, the vapour flux divergence was divgence. lt was apparently that the rain could n ' t occur in the eastern portin of nw china. in 2000 year, okhotsk high was very weak or did n ' t exist in, there was high in the east asia - japan, the subh is located to an area further north than usual. in the east region of nw china, the trough maintained, air stream under troposphere was strong ascending motion, the cycolonic circulation was prevailing, the vapour flux divergence was intensive convergences the rain easy happened in the east areas of northwest china
4多梅雨1999年鄂霍茨克海阻塞高壓與我國東北北部低壓形成偶極子，使得阻塞高壓穩定少動，西太副高位置偏南，西北地區東部持續受高壓控制，冷空氣沿此高壓流經長江中下游地區上空；在西北地區東部對流層中下層氣流下沉運動較強，呈反氣旋渦度，水汽通量散度輻散，不利於西北地區東部降水。空梅雨2000年相反，鄂霍茨克海高壓減弱甚至不存在，東亞-日本為高壓，西太副高位置偏西偏北，西北地區東部處于西風槽中，對流層中下層氣流上升運動增強，盛行低壓環流，水汽通量散度強烈輻合，有利於降水生成。In the first part of the paper, on the basis of the weather processes of huai he basin from june to august in 1998, the difference and reliability of the two reanalysis data game and ncep from the fields of basic element, derivative, precipitation, and surface flux were studied by diagnostical and statistical methods. the results showed that the game reanalysis data is more reliable than ncep / ncar reanalysis data at the bottom and mid - high levels of troposphere, and at the precipitation and surface flux fields the case is just the same. in addition, the paper revealed that the game reanalysis data can show the evolution of the southwest vortex but the ncep / ncar reanalysis data cannot do so
在第一部分，本文以1998年6 - 8月我國江淮地區的天氣過程為背景對game和ncep兩組不同的再分析資料的基本要素場、導數場、降水量場和地面通量場用氣候診斷和統計的方法進行了對比分析，結果表明，在對流層低層和中高層game再分析資料的基本要素場及地面的降水場和通量場較ncep再分析資料更為準確； game再分析資料能很好地反映出西南渦東移並影響江淮大暴雨的重要天氣特徵，而ncep資料則反映不出這一現象。The equation is y = a ebx, the interrelated coefficients are all larger than 0. 95 ; when the rainfalls are close, the volume of the surface runoff increases with the intensity of rainfall and the volume of the surface runoff is remarkable related with the maximum rain intensities of 30 minutes ; with the effect on rain harvesting acreage, the cover rate of the plants, the gradient, and the average soil thickness, the cover rate of the plants and the average soil thickness are the important factors which can affect the volume of rain harvesting. and the average soil thickness is the dominant factor. in order to get good result, we must choice the slope which the cover rate of the plants is low and the average soil thickness is thin, meanwhile increase the rain - harvesting acreage
太行山片麻巖區坡面集雨規律及集雨技術：集雨量與降雨量呈顯著正相關，並且在降雨量大於17 . 6mm時，集雨量隨降雨量的增加呈指數形式增加，擬合方程為y = ae ~ （ bx ） ，相關系數均大於0 . 95 ；降雨量相近的條件下，徑流量隨降雨強度的增大而增大，且在片麻巖山地， 30min最大雨強是影響產流的關鍵因子；在集雨面積、植被覆蓋度、坡度以及平均土層厚度等因素的共同影響下，植被覆蓋度和平均土層厚度是影響集雨量多少的主要因素，其中平均土層厚度是主導因素；而要想取得良好的集雨效果，必須在選擇植被覆蓋度低、坡面土層厚度薄的坡面的同時，加大集雨面積。The analysis of dry pv shows that the high pv dominate the area of typhoon, the higher is the center value of pv, the stronger is the typhoon. lt is also shown that the most important reason resulting in rainstorm is the cold air ( high pv ) which spreads to south from the upper troposphere or lower stratosphere and transports into the warm air. the joining situation of upper and lower pv area make vortex develop. pv transpotation reduces static stability, which increases the releasing of instability energy and makes rainstorm amplify
對干位渦的分析表明：臺風或臺風環流區為高值位渦區，臺風越強，位渦中心值越大；對流層上部或平流層下部冷空氣（高位渦）的擴散南下與暖濕氣流的交匯是造成特大暴雨的重要原因，因為上游斜壓性的發展使對流層頂發生折疊，平流層與對流層相互作用增強，上下位渦區相接的形勢使低層渦旋發展，上升運動加強，位渦的下傳有效地降低了靜力穩定度，有利於位勢不穩定能量的釋放，使得暴雨增幅。The mean bulk momentum transfer coefficient cd and bulk sensible heat transfer coefficient ch is 3. 37 * 10 - 3 and 4. 47 * 10 - 3, which is slightly larger than that above desert gobi and grassland of plain and little than that above plateau. on one hand, the more unstable atmosphere is, the larger bulk transfer coefficients are under unstable conditions, on the other hand, and bulk transfer coefficients decrease as wind speed increases
動量和感熱總體輸送系數的平均值分別為3 . 37 * 10 ~ （ - 3 ）和4 . 47 * 10 ~ （ - 3 ） ，略高於沙漠、戈碩士學位論文:半干早雨養農業區陸面過程觀測試驗研究壁及平原草地的值，而低於高原的值;在不穩定時，層結越不穩定，總體輸送系數也越大，並且隨風速的增加而減小。A dramatic reduction in rainfall was a major trigger for the tragic conflict in darfur
蘇丹達爾福爾地區（ darfur ）悲劇沖突的主要導火索就是該地區降雨量的大幅度降低。Already the french quarter has had 14 inches of rain and many low - lying neighborhoods are flooded
法語區的雨量已達14英寸，許多地勢低的地區已被淹。Based on the principles of runoff agriculture and sloping fields runoff moisture balance of natural precipitation, the dynamical regularity of soil moisture in rainfall and fertilizer harvest terrace was studied, which can provide a scientific basis for improving the utilization of natural precipitation
摘要應用徑流農業和坡地降雨徑流水量平衡原理，對代表燕遼低山丘陵區典型區域不同平坡比的集流聚肥梯田土壤水分動態變化規律進行了研究，為提高該區自然降水利用率提供了科學依據。分享友人