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1、2013职称英语理工类必看UndergroundCoalFiresaLoomingCatastropheCoalburningdeepundergroundinChina,TndiaandIndonesiaisthreateningtheenvironmentandhumanlife,scientistshavewarned,theselarge-scaleundergroundblazescausethegroundtemperaturetoheatupandkillsurroundingveg
2、etation,producegreenhousegasesandcanevenigniteforestfirst,apanelofscientiststoldthearmualmeetingoftheAmericanAssociationFortheAdvancementofScienceinDenver.Theresultingreleaseofpoisonouselements1ikearsenicandmercurycanalsopollutelocalwatersourcesandsoi
3、ls,theywarned.“Coalfiresareaglobalcatastrophe,”saidAssociateProfessorGlennStracherofEastGeorgiaCo11egeinSwainsboro,USA,Butsurprisinglyfewpeopleknowaboutthem.Coalcanheatuponitsown,andeventuallycatchfireandburn,ifthereisacontinuousoxygensupply.Theheatpr
4、oducedisnotcausetodisappearandundertherightcombinationsofsunlightandoxygen,cantriggerspontaneouscatchingfireandburning.Thiscanoccurundcrground,incoalstockpiles,abandonedminosorevenascoalistransported.SuchfiresinChinaconsumeupto200milliontonesofcoalper
5、year,delegatesweretold.Tncomparison,theU.S.economyconsumesaboutonebilliontonesofcoalemnually,saidStracher,whoseanalysisofthelikelyimpactofcoalfireshasbeenacceptedforpublicationintheInternationalJournalofCoalEcology・Onceunderway,coalfirescanburnfordeca
6、des,evencenturies.Intheprocess,theyreleaselargevolumesofgreenhousegasespoisonousfumesandblackparticlesintotheatmosphere.Themembersofthepaneldiscussedtheimpactthesefiresmaybehavingonglobalandregionalclimatechang®candagreedthattheundergroundnatureofthef
7、iresmakesthemdifficulttoprotect・Oneofthemembersofthepanel,AssistantProfessorPaulVanDijkoftheInternationalInstituteforGeo-InformationScieneeandEarthobservationintheNetherlands,hasbeenworkingwiththeChinesegovernmenttodetectandmonitorfiresinthenorthernre
8、gionsofthecountry.Ultimately,theremotesensingandothertechniquesshouldallowscientiststoestimatehowmuchcarbondioxidethesefiresareomitting.OnesuggestedmethodofcontainingthefireswaspresentedbyGaryColaizzi,oftheengineeringfirmGoodson,whichhasdevelo
