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Time Series and Spectral Analysis Lecture Thirteen Filtering in Frequency Domain Geophysical Data Processing EATS4020.03 Q. Cheng

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Page 1: Time Series and Spectral Analysis - York University · Time Series and Spectral Analysis Lecture Thirteen Filtering in Frequency Domain Geophysical Data Processing EATS4020.03 Q

Time Series and Spectral Analysis

Lecture ThirteenFiltering in Frequency DomainGeophysical Data Processing

EATS4020.03 Q. Cheng

Page 2: Time Series and Spectral Analysis - York University · Time Series and Spectral Analysis Lecture Thirteen Filtering in Frequency Domain Geophysical Data Processing EATS4020.03 Q

EATS4020.03 Q. Cheng

Differentiation and Integration Filters

Continuation of Potential Fields

Page 3: Time Series and Spectral Analysis - York University · Time Series and Spectral Analysis Lecture Thirteen Filtering in Frequency Domain Geophysical Data Processing EATS4020.03 Q

EATS4020.03 Q. Cheng

First Order Derivative

Page 4: Time Series and Spectral Analysis - York University · Time Series and Spectral Analysis Lecture Thirteen Filtering in Frequency Domain Geophysical Data Processing EATS4020.03 Q

EATS4020.03 Q. Cheng

Second Order Derivative

Page 5: Time Series and Spectral Analysis - York University · Time Series and Spectral Analysis Lecture Thirteen Filtering in Frequency Domain Geophysical Data Processing EATS4020.03 Q

EATS4020.03 Q. Cheng

Combination of Low- and High- Pass Filters

Low- and Second Order Vertical Derivative Filters

⎪⎩

⎪⎨⎧ >

=otherwisef

fiffF c

,

2,0)(

2λπ

Page 6: Time Series and Spectral Analysis - York University · Time Series and Spectral Analysis Lecture Thirteen Filtering in Frequency Domain Geophysical Data Processing EATS4020.03 Q

EATS4020.03 Q. Cheng

Combination of Low- and High- Pass Filters

Continuation and Second Order Vertical Derivative Filters

zfeffF −= 2)(

Page 7: Time Series and Spectral Analysis - York University · Time Series and Spectral Analysis Lecture Thirteen Filtering in Frequency Domain Geophysical Data Processing EATS4020.03 Q

Applications of Applications of GeoDataGeoData Analysis System (Analysis System (GeoDASGeoDAS) ) for Mineral Exploration in Ontario: for Mineral Exploration in Ontario:

Data processing, Information Extraction and Data processing, Information Extraction and Analysis of Mineral ResourcesAnalysis of Mineral Resources PotentialPotential

QiumingQiuming ChengCheng11, Graeme Bonham, Graeme Bonham--CarterCarter22, , AlirezaAlireza PanahiPanahi11, , James ZhengJames Zheng22, , ShengyuanShengyuan ZhangZhang11, , QingmouQingmou LiLi11, , LinghaiLinghai JinJin11, ,

ZhijinZhijin WangWang11

1. York University1. York University2. Geological Survey of Canada2. Geological Survey of Canada


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