THEAPPLICATIONOFWAVELETMULTI-SCALESOLUTION TOTHEMAGNETICANOMALYINTERPRETATIONOF THEXIAYUIRONOREDEPOSITINTIELING,LIAONINGPROVINCE
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摘要: 以铁岭下峪铁矿高精度磁测数据为基础,采用小波多尺度分析方法,将磁异常分解到不同尺度空间,结合谱分析方法,有效地获取了下峪铁矿不同深度的场源异常特征,提高了磁异常解释精度,推测了下峪铁矿200m以下已没有铁矿体的存在。利用已知地质资料建立的地质体模型,通过二度半人机交互反演拟合出矿体的形态特征,分析了其对应异常体的相对深度,从另一个角度进一步验证了小波多尺度分解方法对矿体空间分布特征判断的准确性。Abstract: Withthehigh-precisionmagneticsurveydataobtainedfromtheXiayuirondepositasthebasis,theauthoradoptedthewave-letmulti-scaleanalyticalmethodtodecomposethemagneticanomalyintospaceofdifferentscalesand,incombinationwithspectruma-nalysismethod,effectivelyobtainedfieldsourceanomalycharacteristicsatdifferentdepthsoftheXiayuironoredeposit,thusimproving theinterpretationprecisionofthemagneticanomaly.Itisinferredthatthereexistsnoironorebodybelow200mintheXiayuironde-posit.Thegeologicalbodymodelestablishedonthebasisofgeologicaldataavailablewereutilizedtodisplaytheshapeoftheorebody throughtwo-degree-and-a-halfinteractiveinversefitting,andthedepthofthecorrespondinganomalybodywasanalyzed.Theresults obtainedfurtherprovetheaccuracyofthewaveletmulti-scaledecompositionmethodinjudgingthedistributionoftheorebodyfroman-otherangle.
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