{"id":304492,"date":"2017-04-20T08:29:00","date_gmt":"2017-04-20T12:29:00","guid":{"rendered":"https:\/\/spaceweekly.com\/?guid=5c999cb4452099ea2057797c0d246c40"},"modified":"2017-04-20T08:29:00","modified_gmt":"2017-04-20T12:29:00","slug":"larsen-c-crack-interferogram-2","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=304492","title":{"rendered":"Larsen-C crack interferogram"},"content":{"rendered":"<p>\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/04\/larsen-c_crack_interferogram\/16908501-5-eng-GB\/Larsen-C_crack_interferogram_small.jpg\" width=\"170\" height=\"95\" align=\"left\" hspace=\"8\" \/><\/p>\n<p>\nTwo Sentinel-1 radar images from 7 and 14 April 2017 were combined to create this interferogram showing the growing crack in Antarctica\u2019s Larsen-C ice shelf.\n<\/p>\n<p>\nPolar scientist Anna Hogg said: \u201cWe can measure the iceberg crack propagation much more accurately when using the precise surface deformation information from an interferogram like this, rather than the amplitude \u2013 or black and white \u2013 image alone where the crack may not always be visible.\u201d\n<\/p>\n<p>\nWhen the ice shelf calves this iceberg it will be one of the largest ever recorded \u2013 but exactly how long this will take is difficult to predict. The sensitivity of ice shelves to climate change has already been observed on the neighbouring Larsen-A and Larsen-B ice shelves, both of which collapsed in 1995 and 2002, respectively.\n<\/p>\n<p>\nThese <a href=\"http:\/\/www.esa.int\/Our_Activities\/Observing_the_Earth\/Antarctic_ice_safety_band_at_risk\" >ice shelves are important because they act as buttresses<\/a>, holding back the ice that flows towards the sea.\n<\/p>\n<p>\nThe Copernicus Sentinel-1 two-satellite constellation is indispensable for discovering and monitoring events like these because it delivers radar images every six days, even when Antarctica is shrouded in darkness for several months of the year.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/04\/larsen-c_crack_interferogram\/16908501-5-eng-GB\/Larsen-C_crack_interferogram_small.jpg\" width=\"170\" height=\"95\" align=\"left\" hspace=\"8\"><\/p>\n<p>\nTwo Sentinel-1 radar images from 7 and 14 April 2017 were combined to create this interferogram showing the growing crack in Antarctica&rsquo;s Larsen-C ice shelf.\n<\/p>\n<p>\nPolar scientist Anna Hogg said: &ldquo;We can measure the iceberg crack propagation much more accurately when using the precise surface deformation information from an interferogram like this, rather than the amplitude &ndash; or black and white &ndash; image alone where the crack may not always be visible.&rdquo;\n<\/p>\n<p>\nWhen the ice shelf calves this iceberg it will be one of the largest ever recorded &ndash; but exactly how long this will take is difficult to predict. The sensitivity of ice shelves to climate change has already been observed on the neighbouring Larsen-A and Larsen-B ice shelves, both of which collapsed in 1995 and 2002, respectively.\n<\/p>\n<p>\nThese <a href=\"http:\/\/www.esa.int\/Our_Activities\/Observing_the_Earth\/Antarctic_ice_safety_band_at_risk\" target=\"_blank\">ice shelves are important because they act as buttresses<\/a>, holding back the ice that flows towards the sea.\n<\/p>\n<p>\nThe Copernicus Sentinel-1 two-satellite constellation is indispensable for discovering and monitoring events like these because it delivers radar images every six days, even when Antarctica is shrouded in darkness for several months of the year.<\/p>\n","protected":false},"author":5,"featured_media":615444,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-304492","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-multimedia"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/304492","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=304492"}],"version-history":[{"count":1,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/304492\/revisions"}],"predecessor-version":[{"id":304493,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/304492\/revisions\/304493"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/615444"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=304492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=304492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=304492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}