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ID:33508013
大小:1.41 MB
页数:49页
时间:2019-02-26
《international legend for hydrogeological maps》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、INTERNATIONALASSOCIATIONOFHYDROGEOLOGISTS(IAH)INTERNATIONALASSOCIATIONOFHYDROLOGICALSCIENCES(IAHS)UNITEDNATIONSEDUCATIONAL,SCIENTIFICANDCULTURALORGANIZATION(UNESCO)InternationalLegendforHydrogeologicalMaps-Revisedversion,1983-ContentsPreface1Foreword51.HistoricalDevelopmentoftheLegendandtheInt
2、ernationalHydrogeologicalMapofEurope(H.KARRENBERG)92.Introduction173.InternationalLegendforHydrogeologicalMapsA.BackgroundInformation23B.GroundwaterandRocks24C.Lithology25D.Representationofdetaileddata294.SelectedListofHydrogeologicalMaps45-5-FOREWORDThelargeandgrowingnumberofhydrogeologicalma
3、psthrough•outtheworldisevidenceofthegeneraltendencytopresentbothdataandtheirinterpretationinmapform.Thismethodofpresentationpermitsarapidarealevaluationofthehydro-geologylinkedtotheadvantagesofatopographicbase.Thereis,however,likelytobeaconsiderablevariationintheamountofinformationdepictedupon
4、agivenmap,dependingbothuponthechosenscaleanduponthepurposethemapisintendedtoserve.ThisLegendisintendedtobeaguidetothepreparationofhydrogeologicalmapsatanyscaletoauniformstandard.Alistisgivenofthesymbols,ornamentsandcolourswhichhavespecificmeaningsandthatareinternationallyrecog•nised.Thispresen
5、tLegendisbasedupontheInternationalLegendforHydrogeologicalMapspublishedjointlyin1970bytheInter•nationalAssociationofHydrogeologists,theInternationalAssociationofHydrologicalSciences,UNESCO,andtheInsti•tuteofGeologicalSciences(London).Usedinmanymappingprojectsthroughouttheworld,the1970Legendisn
6、owoutofprint,andarevisededitionisbeingprepared-Asapreli•minarystep,asimpleandinexpensiveversionhasbeenpro•ducedhereasaUNESCOdocumentinEnglishlanguageonly,andwithoutcolourillustrations.Atsomefuturedate,afterade•quatereviewandtrialofthisrevisedLegend,itisintendedthatadefinitiveandmulti-lingualve
7、rsionwithcolourillustrationswillbepublished.-6-Forthecompilationofthe1970Legend,workinggroupsweresetupwithintheInternationalAssociationofHydrogeologists(IAH)andtheInternationalAssociationofHydrologicalSciences(IAHS).Therecommendationsof
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