{"id":75,"date":"2015-07-22T15:30:18","date_gmt":"2015-07-22T15:30:18","guid":{"rendered":"http:\/\/airborne.geophysicsgpr.com\/?page_id=75"},"modified":"2018-05-28T03:51:29","modified_gmt":"2018-05-28T03:51:29","slug":"magnetometry","status":"publish","type":"page","link":"https:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetometry\/","title":{"rendered":"Magnetometry"},"content":{"rendered":"<div id=\"pl-75\"  class=\"panel-layout\" ><div id=\"pg-75-0\"  class=\"panel-grid panel-has-style\" ><div class=\"texte-home-right article panel-row-style panel-row-style-for-75-0\" ><div id=\"pgc-75-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-75-0-0-0\" class=\"so-panel widget widget_sow-editor panel-first-child panel-last-child\" data-index=\"0\" ><div class=\"panel-widget-style panel-widget-style-for-75-0-0-0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<p>Magnetometry consists of measuring terrestrial magnetic field to detect local variations due to magnetism and ferro-magnetism of local geological structures.<\/p>\n<h2 class=\"h2resize\">GPR offers a full range of surveys done by Airborne Magnetometry:<\/h2>\n<ul>\n<li><a href=\"https:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetometry\/helimager\/\">Helicopter-borne\u00a0aeromagnetic\u00a0survey (with Bird\/Helimag)<\/a>;<\/li>\n<li><a href=\"https:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetometry\/airborne-magnetometry\/\">Helicopter-borne aeromagnetic survey (with mounted Stinger)<\/a>;<\/li>\n<li><a href=\"https:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetometry\/stinger-magnetometry\/\">Fixe-wing aeromagnetic survey (optional Gradient)<\/a>.<\/li>\n<\/ul>\n<p>The magnetometers used by GPR have been specially designed for aerial surveys. The specification are presented in the table below.\u00a0The in flight synchronization of the measurements with ground control stations is done using the \"Pulse Per Second\" (pps) simultaneously generated by all the GPS units. The diurnal effect on the Earth's magnetic field can thus be corrected with perfect synchronization.<\/p>\n<p>\u00a0<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"159\">\n<p>Sensitivity<\/p>\n<\/td>\n<td width=\"207\">\n<p>0.004\u00a0nT\/sqrt(Hz) \u00a0RMS<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"159\">\n<p>Absolute Accuracy<\/p>\n<\/td>\n<td width=\"207\">\n<p>&lt; 3\u00a0nT throughout range<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"159\">\n<p>Noise Envelope nT<\/p>\n<\/td>\n<td width=\"207\">\n<p>&lt; 0.1 nT (on 4<sup>th<\/sup> difference)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"159\">\n<p>Range<\/p>\n<\/td>\n<td width=\"207\">\n<p>20,000 to 100,000nT<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"159\">\n<p>Sampling interval<\/p>\n<\/td>\n<td width=\"207\">\n<p>0.1 s<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"159\">\n<p>Heading effect<\/p>\n<\/td>\n<td width=\"207\">\n<p><u>+<\/u> 0.15 nT<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00a0<\/p>\n<p>For more information, please contact our <a href=\"mailto:info@geophysicsgpr.com\">Airborne Survey Team<\/a><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><div id=\"pg-75-1\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-75-1-0\"  class=\"panel-grid-cell\" ><div id=\"panel-75-1-0-0\" class=\"so-panel widget widget_black-studio-tinymce widget_black_studio_tinymce panel-first-child panel-last-child\" data-index=\"1\" ><div class=\"textwidget\"><p><div id=\"wondergridgallerylightbox_options\" data-skinsfoldername=\"skins\/default\/\"  data-jsfolder=\"https:\/\/airborne.geophysicsgpr.com\/wp-content\/plugins\/wonderplugin-gridgallery\/engine\/\" style=\"display:none;\"><\/div>\r\n<style type=\"text\/css\">.wpp-btn-blue-medium {     background: #fa4c06; 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font-size:14px; font-family:Armata,sans-serif,Arial; overflow:hidden; text-align:left;}\" data-descriptionbottomcss=\"{color:#333; font-size:12px; font-family:Arial,Helvetica,sans-serif; overflow:hidden; text-align:left; margin:4px 0px 0px; padding: 0px;}\" data-googleanalyticsaccount=\"\" data-gap=\"4\" data-margin=\"10\" data-borderradius=\"0\" data-hoverzoominvalue=\"24\" data-hoverzoominduration=\"180\" data-hoverzoominimagescale=\"1.1\" data-hoverzoominimageduration=\"360\" data-hoverfadeopacity=\"0.8\" data-hoverfadeduration=\"300\" data-videoplaybutton=\"playvideo-64-64-0.png\" data-column=\"3\" data-mediumcolumn=\"2\" data-mediumscreensize=\"800\" data-smallcolumn=\"1\" data-smallscreensize=\"600\" data-titlemode=\"always\" data-titleeffect=\"fade\" data-titleeffectduration=\"500\" data-titleheight=\"0\" data-jsfolder=\"https:\/\/airborne.geophysicsgpr.com\/wp-content\/plugins\/wonderplugin-gridgallery\/engine\/\" data-skinsfoldername=\"skins\/default\/\" style=\"display:none;position:relative;margin:0 auto;width:100%;max-width:1328px;\" ><div class=\"wonderplugin-gridgallery-list\" style=\"display:block;position:relative;max-width:100%;margin:0 auto;\"><div class=\"wonderplugin-gridgallery-item\" data-row=\"1\" data-col=\"1\"><div class=\"wonderplugin-gridgallery-item-container\"><a href=\"http:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetometry\/helimager\" title=\"Helimager\" data-description=\"The HeliMAGer \u2122 system consists of a stable helicopter-borne vector platform, developed by Geophysics GPR International Inc.\" data-button=\"<a href=&quot;http:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetics-and-gradio-magnetics\/helimager\/&quot;><button class=&quot;wpp-btn-blue-medium&quot;>Learn more<\/button><\/a>\"><img decoding=\"async\" class=\"wonderplugin-gridgallery-item-img\" src=\"http:\/\/airborne.geophysicsgpr.com\/wp-content\/uploads\/sites\/8\/2015\/07\/IMG_3063_b-1024x768.jpg\" \/><\/a><\/div><\/div><div class=\"wonderplugin-gridgallery-item\" data-row=\"1\" data-col=\"1\"><div class=\"wonderplugin-gridgallery-item-container\"><a href=\"http:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetics-and-gradio-magnetics\/airborne-magnetometry\/\" title=\"Airborne Magnetometry\" data-description=\"Airborne Magnetometry is done with  airborne magnetometers and they are used to detect magnetic anomalies in the local magnetic field of the Earth.\" data-button=\"<a href=&quot;http:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetics-and-gradio-magnetics\/airborne-magnetometry\/&quot;><button class=&quot;wpp-btn-blue-medium&quot;>Learn more<\/button><\/a>\"><img decoding=\"async\" class=\"wonderplugin-gridgallery-item-img\" src=\"http:\/\/airborne.geophysicsgpr.com\/wp-content\/uploads\/sites\/8\/2015\/08\/Slide3.jpg\" \/><\/a><\/div><\/div><div class=\"wonderplugin-gridgallery-item\" data-row=\"1\" data-col=\"1\"><div class=\"wonderplugin-gridgallery-item-container\"><a href=\"http:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetics-and-gradio-magnetics\/stinger-magnetometry\/\" title=\"Stinger Magnetometry\" data-description=\"Stinger Magnetometry is done with airborne magnetometers and they are used to detect magnetic anomalies in the Earth's local magnetic field.\" data-button=\"<a href=&quot;http:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetics-and-gradio-magnetics\/stinger-magnetometry\/&quot;><button class=&quot;wpp-btn-blue-medium&quot;>Learn more<\/button><\/a>\"><img decoding=\"async\" class=\"wonderplugin-gridgallery-item-img\" src=\"http:\/\/airborne.geophysicsgpr.com\/wp-content\/uploads\/sites\/8\/2015\/08\/IMG_0326-1024x768.jpg\" \/><\/a><\/div><\/div><div style=\"clear:both;\"><\/div><\/div><div class=\"wonderplugin-gridgallery-engine\"><a href=\"http:\/\/www.wonderplugin.com\/wordpress-gridgallery\/\" title=\"WordPress Grid Gallery\">WordPress Grid Gallery<\/a><\/div><\/div><\/p>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Magnetometry consists of measuring terrestrial magnetic field to detect local variations due to magnetism and ferro-magnetism of local geological structures. GPR offers a full range of surveys done by Airborne Magnetometry: Helicopter-borne\u00a0aeromagnetic\u00a0survey (with Bird\/Helimag); Helicopter-borne aeromagnetic survey (with mounted Stinger); Fixe-wing aeromagnetic survey (optional Gradient). The magnetometers used by GPR have been specially designed for&#8230;  <a href=\"https:\/\/airborne.geophysicsgpr.com\/en\/techniques\/magnetometry\/\" class=\"more-link\" title=\"Read Magnetometry\">Read more &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":632,"parent":13,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-full-width.php","meta":{"content-type":"","footnotes":""},"class_list":["post-75","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/pages\/75","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/comments?post=75"}],"version-history":[{"count":18,"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/pages\/75\/revisions"}],"predecessor-version":[{"id":1089,"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/pages\/75\/revisions\/1089"}],"up":[{"embeddable":true,"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/pages\/13"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/media\/632"}],"wp:attachment":[{"href":"https:\/\/airborne.geophysicsgpr.com\/en\/wp-json\/wp\/v2\/media?parent=75"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}