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snippet: A 200 m grid of the horizontal gradient of the reduction-to-the-pole (RTP) magnetic intensity for New Brunswick.
summary: A 200 m grid of the horizontal gradient of the reduction-to-the-pole (RTP) magnetic intensity for New Brunswick.
accessInformation: NB Dept of Natural Resources, GSB Section
thumbnail: thumbnail/thumbnail.png
typeKeywords: ["Data","Service","Image Service","ArcGIS Server"]
description: A 200 m grid of the horizontal gradient of the reduction-to-the-pole (RTP) magnetic intensity for New Brunswick.This dataset represents the horizontal gradient of the reduction-to-the-pole (RTP) magnetic intensity for the province of New Brunswick at 200 m resolution. It was derived from NRCan airborne magnetic surveys originally flown at 800–1000 m line spacing. The RTP_Hgrad highlights the edges of magnetic sources, helping to delineate geological contacts and structures. The dataset is provided in NB Stereographic double (NAD83) for consistent province-wide coverage.The RTP_Hgrad grid was produced by converting existing NRCan TMI survey grids to ER Mapper format, reprojecting to NB Stereographic double, applying reduction-to-the-pole processing, and then calculating the horizontal gradient of the RTP grid.Data created Sept 2025.
licenseInfo:
catalogPath:
title: Canada_200m_RTP_Hgrad_NBStereo.ers
type: Image Service
url: http://s25iwvgisapp04.gnb.ca:6080/arcgis/services/rest/services/Geophysics_Aeromagnetic_Compiled/Compiled_200m_RTP_Hgrad/ImageServer
tags: []
culture: en-US
name: Compiled_200m_RTP_Hgrad
guid:
spatialReference: NAD_1983_CSRS_New_Brunswick_Stereographic