学科分类
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2 个结果
  • 简介:Severalpre-andpost-congressfieldtripswereorganizedinconnectionwiththe32ndInternationalGeologicalCongressheldinFlorence,Italy,duringAugust,2004.Oneofthese,thePrestigeFieldTrip(PR01--AtraversethroughCentralAsiaranges,fromtheIndianplatetotheKarakorum)lastedfor16daysfrom21Juneto6July.M.GaetanioftheUniversityofMilan(Italy)actedasLeaderandoverallOrganizer,withA.Zanchi(Univ.Milano-Bicocca),M.Q.Jan(Univ.ofPeshawar,Pakistan)andM.N.Chaudhry(PunjabUniversity,Pakistan)asAssociateLeaders.LocallogisticsweretakencareofbytheAdventureTours,Pakistan.

  • 标签: 喜玛拉雅-昆仑山脉 巴基斯坦 地质构造 中生代
  • 简介:ThehugewinterstormofDecember23–29,2015deliveredheavyrainfallinabroadswathacrosstheUSA,delugingEast-CentralMissouri.Recordhighriverlevelsweresetatmanysites,butdamagesweremostpronouncedindevelopedfloodplainareas,particularlywherehighleveeswerebuiltorriverchannelsgreatlynarrowed.Anaverageof20cmofrainthatmostlyfellinthreedaysimpactedtheentire10300km2MeramecBasin.Comparedtothepriorrecordfloodof1982,thehighestrelativestage(+1.3m)onMeramecRiveroccurredatValleyParkproximalto(1)anewlevee,(2)alandfillinthefloodway,(3)largefloodplainconstructionfills,and(4)tributarycreekbasinsimpactedbysuburbansprawl.Eventhoughonlyasmallfractionofthe1.8millionkm2MississippiRiverwatershedaboveSt.Louisreceivedextraordinaryrainfallduringthisevent,thehugechannelizedrivernearandbelowSt.Louisrapidlyrosetosetthe3rd-highesttothehigheststagesever,exhibitingtheflashyresponsetypicalofamuchsmallerriver.

  • 标签: 河流管理 洪水 平原地区 垃圾填埋场 中东部 高水位