北极海冰对黄河上游汛期水量丰枯的影响分析     

李和平  徐友明  饶素秋 《水科学进展》2000,11(3):284-290

从北半球的冷源出发,以半球尺度来考虑北极海冰对黄河上游水量丰枯的影响,通过对北极海冰与黄河上游汛期水量的统计分析揭示其相关关系,并探讨北极海冰通过影响大气环流进而影响黄河上游水量的物理机制.  相似文献   

ENSO循环与黄河上游径流的丰枯   总被引：3，自引：0，他引：3  

蓝永超  丁永建  康尔泗  MA Quanjie  Zhang Jishi 《地理学报(英文版)》2003,13(1):105-111

1IntroductionScholarsoftheinternationalmeteorologicalandoceanographicalcirclesgenerallythinkElNinoeventhasoccurredwhenthepositivedeparturesofmeansea-surfacetemperature(SST)atEquatorialEastPacificOceanArea(lyingbetween0o-10oS,180o-90oW)occurcontinuallywith0.5oCexteedingthelong-rangemeanandcontinualperiodlastinghalfayear.TheyalsothinkLaNinaeventhasoccurredwhenthestrongernegativedeparturesoccur.SouthernOscillationoccurringsynchronouslywithElNinoindicatesitisaneventwithalternativeoccurrence…  相似文献   

The relationship between ENSO cycle and high and low-flow in the upper Yellow River   总被引：1，自引：0，他引：1  

LAN Yongchao  DING Yongjiang  KANG Ersi  MA Quanjie  ZHANG Jishi 《地理学报》2003,13(1):105-111

Firstly, the hydrological and meteorological features of the upper reaches of the Yellow River above Tangnag are analyzed based on observation data, and effects of EI Nino and La Nina events on the high and low flow in the upper Yellow River are discussed. The results show El Nino and La Nina events possess consanguineous relationship with runoff in the upper Yellow River. As a whole, the probability of low flow occurrence in the upper Yellow River is relatively great along with the occurrence of El Nino event. Moreover, the flood in the upper Yellow River occurs frequently with the occurrence of La Nina event. Besides, the results also show dissimilarity of El Nino event occurring time exerts greater impact on high flow and low flow in the upper Yellow River, that is, the probability of drought will be greater in the same year if El Nino event occurs in spring, the high-flow may happen in this year if El Nino occurs in summer or autumn; the longer the continuous period of El Nino is, the lower the runoff in the upper Yellow River is.  相似文献