{"id":557,"date":"2015-05-10T14:04:37","date_gmt":"2015-05-10T18:04:37","guid":{"rendered":"https:\/\/sites.temple.edu\/geophysics\/?p=557"},"modified":"2015-05-10T14:34:08","modified_gmt":"2015-05-10T18:34:08","slug":"using-thermal-imagery-to-look-for-gw-seepage-pennypack-creek-pa","status":"publish","type":"post","link":"https:\/\/sites.temple.edu\/geophysics\/2015\/05\/10\/using-thermal-imagery-to-look-for-gw-seepage-pennypack-creek-pa\/","title":{"rendered":"Using thermal imagery to look for GW seepage, Pennypack Creek, PA"},"content":{"rendered":"<p>My colleague, Marty Briggs, at the USGS Office of Groundwater, Branch of Geophysics, has done some <a href=\"http:\/\/water.usgs.gov\/ogw\/bgas\/thermal-cam\/\">fascinating research<\/a> using thermal imaging.\u00a0 The weekend I borrowed a FLIR camera to look for seepage points in the bank of the Pennypack Creek in Philadelphia, one of <a href=\"http:\/\/astro.temple.edu\/~ltoran\/http:\/\/\">Dr. Toran&#8217;s <\/a>research areas.\u00a0 This time of year groundwater is colder than stream water, so seepage points appear as dark (cold) spots.\u00a0 You can see bank seepage\u00a0 next to Dr. Toran in the image below.\u00a0 It is important to note that IR photography is sensitive to only surface water temperature, so seepage under the creek is not detectable unless discharge is high enough to change the overall stream temperature.<\/p>\n<div id=\"attachment_560\" style=\"width: 650px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/sites.temple.edu\/geophysics\/files\/2015\/05\/IR_1142.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-560\" class=\"wp-image-560 size-full\" src=\"https:\/\/sites.temple.edu\/geophysics\/files\/2015\/05\/IR_1142.jpg\" alt=\"Thermal image showing groundwater seepage on the banks of the Pennypack.\" width=\"640\" height=\"480\" srcset=\"https:\/\/sites.temple.edu\/geophysics\/files\/2015\/05\/IR_1142.jpg 640w, https:\/\/sites.temple.edu\/geophysics\/files\/2015\/05\/IR_1142-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><p id=\"caption-attachment-560\" class=\"wp-caption-text\">Dark (cold) spot on the bank is GW seepage.<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>Just for fun, and in honor of Mother&#8217;s Day weekend, I took a FLIR image of a mother goose and her goslings.\u00a0 The chicks are little bundles of heat (probably less well insulted).<\/p>\n<div id=\"attachment_561\" style=\"width: 650px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/sites.temple.edu\/geophysics\/files\/2015\/05\/IR_1147.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-561\" class=\"wp-image-561 size-full\" src=\"https:\/\/sites.temple.edu\/geophysics\/files\/2015\/05\/IR_1147.jpg\" alt=\"Thermal image of a mother goose and goslings\" width=\"640\" height=\"480\" srcset=\"https:\/\/sites.temple.edu\/geophysics\/files\/2015\/05\/IR_1147.jpg 640w, https:\/\/sites.temple.edu\/geophysics\/files\/2015\/05\/IR_1147-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><p id=\"caption-attachment-561\" class=\"wp-caption-text\">Mother Goose and goslings<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>My colleague, Marty Briggs, at the USGS Office of Groundwater, Branch of Geophysics, has done some fascinating research using thermal imaging.\u00a0 The weekend I borrowed a FLIR camera to look for seepage points in the bank of the Pennypack Creek &hellip; <a href=\"https:\/\/sites.temple.edu\/geophysics\/2015\/05\/10\/using-thermal-imagery-to-look-for-gw-seepage-pennypack-creek-pa\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":606,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-557","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/posts\/557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/users\/606"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/comments?post=557"}],"version-history":[{"count":0,"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/posts\/557\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/media?parent=557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/categories?post=557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.temple.edu\/geophysics\/wp-json\/wp\/v2\/tags?post=557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}