Data

Geophysics Total Magnetic Intensity RTP - TMI RTP tilt filter

AuScope
Geological Survey of NSW (Associated with)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://portal.auscope.org/geonetwork/srv/eng/catalog.search#/metadata/d0315c44db68367aa0dc2fc46991011afb443245&rft.title=Geophysics Total Magnetic Intensity RTP - TMI RTP tilt filter&rft.identifier=http://portal.auscope.org/geonetwork/srv/eng/catalog.search#/metadata/d0315c44db68367aa0dc2fc46991011afb443245&rft.publisher=AuScope&rft.description=This dataset is part of the Geological Survey NSW Geophysics dataset series. Total magnetic intensity reduced to the pole (TMI RTP) overlain on tilt-filtered TMI RTP data. The image is a partially-transparent pseudocolour layer of TMI RTP, with a histogram-equalised colour-stretch, overlain on a greyscale intensity layer of the tilt-angle of TMI RTP, with a histogram-equalised colour-stretch; no sun illumination has been applied. Cooler colours indicate lower values and warmer colours represent increasingly higher magnetic intensity values. Dark tones indicate lower values and lighter tones represent increasingly higher values of the phase angle of the magnetic values. The tilt-angle is a local positive maximum over a magnetic source and is zero near the edge; the tilt-angle is less sensitive to source depth or anomaly amplitude than are simple derivative filters. Reduction to the pole simulates the form that the anomalous TMI would take if the Earth's magnetic field were locally vertical, as it is at the magnetic pole, assuming that all magnetic sources are inductively magnetised. Variations in the magnetic field respond to the intensity of magnetisation, which is controlled by lithological factors, principally magnetite (and or pyrrhotite) content.This record was harvested by RDA at 2022-06-26T10:11:50.48+10:00 from http://portal.auscope.org/geonetwork/srv/eng/catalog.search#/metadata/d0315c44db68367aa0dc2fc46991011afb443245 in AuScope's Data Catalogue where it was last modified at 2021-09-07T02:01:47.&rft.creator=Anonymous&rft.date=2021&rft.coverage=northlimit=-27.863999999219804; southlimit=-37.91191240211436; westlimit=140.318; eastLimit=154.79973778961698; projection=GDA94&rft.coverage=northlimit=-27.863999999219804; southlimit=-37.91191240211436; westlimit=140.318; eastLimit=154.79973778961698; projection=GDA94&rft_subject=geoscientificInformation&rft_subject=WCS&rft_subject=ImageMosaic&rft_subject=MagRTPtilt&rft.type=dataset&rft.language=English Access the data

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Brief description

This record was harvested by RDA at 2022-06-26T10:11:50.48+10:00 from http://portal.auscope.org/geonetwork/srv/eng/catalog.search#/metadata/d0315c44db68367aa0dc2fc46991011afb443245 in AuScope's Data Catalogue where it was last modified at 2021-09-07T02:01:47.

Full description

This dataset is part of the Geological Survey NSW Geophysics dataset series.

Total magnetic intensity reduced to the pole (TMI RTP) overlain on tilt-filtered TMI RTP data. The image is a partially-transparent pseudocolour layer of TMI RTP, with a histogram-equalised colour-stretch, overlain on a greyscale intensity layer of the tilt-angle of TMI RTP, with a histogram-equalised colour-stretch; no sun illumination has been applied. Cooler colours indicate lower values and warmer colours represent increasingly higher magnetic intensity values. Dark tones indicate lower values and lighter tones represent increasingly higher values of the phase angle of the magnetic values. The tilt-angle is a local positive maximum over a magnetic source and is zero near the edge; the tilt-angle is less sensitive to source depth or anomaly amplitude than are simple derivative filters. Reduction to the pole simulates the form that the anomalous TMI would take if the Earth's magnetic field were locally vertical, as it is at the magnetic pole, assuming that all magnetic sources are inductively magnetised. Variations in the magnetic field respond to the intensity of magnetisation, which is controlled by lithological factors, principally magnetite (and or pyrrhotite) content.

Modified: 07 09 2021

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154.79973778962,-27.86399999922 154.79973778962,-37.911912402114 140.318,-37.911912402114 140.318,-27.86399999922 154.79973778962,-27.86399999922

147.55886889481,-32.887956200667

text: northlimit=-27.863999999219804; southlimit=-37.91191240211436; westlimit=140.318; eastLimit=154.79973778961698; projection=GDA94

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