{"id":2081,"date":"2019-09-19T15:13:59","date_gmt":"2019-09-19T19:13:59","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/itp\/?page_id=2081"},"modified":"2021-07-20T12:58:11","modified_gmt":"2021-07-20T16:58:11","slug":"itp38-deployment","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/itp\/data\/completed-missions\/itp38\/itp38-deployment\/","title":{"rendered":"ITP 038 Deployment"},"content":{"rendered":"\r\n\t

ITP38 Deployment Operations<\/h1>\r\n\t

Skirting the volcanic ash cloud between Iceland and Svalbard delayed the arrival of the 3 man deployment team at the Russian ice camp Barneo.\u00a0 Three hours after arriving at the camp on April 18, 2010, they departed on an MI-8 helicopter with ITP 38 and AOFB and a temporary camp.\u00a0 The Russian pilot was instructed to head as far upstream of the ice drift as possible to lengthen the drift of the Ice-Based Observatory (IBO) of 4 buoys that were to be deployed, and seek a relatively flat multiyear floe 2.5 to 3.5 m thick, at least 100 m in diameter, with ridges no greater than 2-3 m in height. \u00a0However all of the ice in the region was similar first year ice (~1.8 m thick) formed the previous autumn, so we had to settle for thinner ice.\u00a0 After about 2 hours, the helicopter landed on a large flat floe about 500 m in diameter with modest ridges all around at 88.5 \u00b0N, 148 \u00b0E – about 80 miles upstream of Barneo.\u00a0 The weather was clear with light winds and air temperatures around -15 \u00b0C.<\/p>\r\n

Immediately upon landing, a 5 cm hole was augered through a selected floe to determine the floe thickness, then the helicopter was shut down and the gear unloaded.\u00a0 While the helicopter waited, 3 NPEO personnel constructed the 8\u2019x20\u2019 winter tent and heater on the floe which took about an hour, while the deployment team staged the instrumentation and camp provisions.\u00a0 After a short briefing on the flare gun and rifle, all but 3 boarded the MI-8 and departed for Barneo.\u00a0\u00a0 Our small party was left to live on this floe for the next few days, install the ITP and AOFB buoys on this floe, and when completed would call for the delivery of the IMB and PAWS systems, which would be installed while the tent was being removed.\u00a0 The AOFB was specified to be at least 25 m from all the other buoys and the same distance away from any ridges.\u00a0 After the placement of the buoys was determined, and a working tent some of the deployment apparatus were assembled, our efforts turned toward outfitting our living quarters with cots, melting ice for drinking and cooking water, and bringing food inside for defrosting.<\/p>\r\n

The following day started off with similar weather conditions as the previous day.\u00a0 Deployment of ITP 38 began around 0900 UTC by augering the 11 inch diameter hole through the icefloe.\u00a0 An hour and a half later the ITP profiler was in the water and passed its first communications test.\u00a0 Another hour later (by 1140 UTC) the surface package was in place over the system, and the profiler again tested positively.\u00a0 Deployment of the AOFB began after lunch 90 paces away from the ITP surface float.\u00a0 The ice thickness at the AOFB site was 1.85 m thick, with 15 cm of freeboard and 33 cm of snow (however the ice thickness only a few paces away for the thermistor string was only 1.4 m).\u00a0\u00a0 The wind picked up some during this time which slowed the deployment somewhat, but still took less than 2 hours.\u00a0 Over the next 2 hours, the ice thermistor string was installed and all testing completed positively.<\/p>\r\n

On April 20, the Russian MI-8 helicopter arrived in the afternoon with the other 2 buoys.\u00a0 The tent was removed while the IMB and PAWS buoys were deployed in 1.5-1.6 m thick areas of the ice.\u00a0 The consistent 30 cm of snow across the floe may have hid variations in floe thickness that would have been apparent if the surface topography was visible.\u00a0 A NOAA\/PMEL webcam was also installed at this time.\u00a0 After a 45 minute flight back, the deployment team and all gear were returned to Barneo and were transported back to Svalbard on the following day.<\/p>\r\n\t\t\t\t\r\n\t\t\t\t\"The\r\n\t\t\t\t<\/a>\r\n\t\tThe ITP, AOFB and deployment apparatus arrive at Ice Camp Barneo (in the background). (Rick Krishfield)\r\n\t\t\t\t\r\n\t\t\t\t\"Packing\r\n\t\t\t\t<\/a>\r\n\t\tPacking the tail section of the MI-8 with the first load of buoys and camp gear. (Rick Krishfield)\r\n\t\t\t\t\r\n\t\t\t\t\"The\r\n\t\t\t\t<\/a>\r\n\t\tThe MI-8 is unloaded at the remote deployment site. (Rick Kirshfield)\r\n\t\t\t\t\r\n\t\t\t\t\"The\r\n\t\t\t\t<\/a>\r\n\t\tThe next morning, Kris Newhall and Jeff Pietro clamp the ITP 38 profiler to the wire prior to lowering it through the ice hole. (Rick Krishfield)\r\n\t\t\t\t\r\n\t\t\t\t\"Rick\r\n\t\t\t\t<\/a>\r\n\t\tRick Krishfield clamps on the top bumper before the surface package is slipped over the hole. (Kris Newhall)\r\n\t\t\t\t\r\n\t\t\t\t\"Newhall\r\n\t\t\t\t<\/a>\r\n\t\tHaving passed the profiler communications test, Newhall and Pietro unspool the ITP tether outside the working tent, living quarters are the tent to the left. (Rick Krishfield)\r\n\t\t\t\t\r\n\t\t\t\t\"ITP38\r\n\t\t\t\t<\/a>\r\n\t\tITP38 deployed. (Rick Krishfield)\r\n\t\t\t\t\r\n\t\t\t\t\"AOFB\r\n\t\t\t\t<\/a>\r\n\t\tAOFB deployed several hours later. (Rick Krishfield)\r\n\t\t\t\t\r\n\t\t\t\t\"Newhall\r\n\t\t\t\t<\/a>\r\n\t\tAfter arrival of the MI-8 on the next day with the other 2 buoys, Newhall and Pietro deploy the PAWS. (Rick Krishfield)\r\n\t\t\t\t\r\n\t\t\t\t\"Cecilia\r\n\t\t\t\t<\/a>\r\n\t\tCecilia Peralta-Feriz levels the snow around the IMB. (Rick Krishfield)\r\n","protected":false},"excerpt":{"rendered":"

ITP38 Deployment Operations Skirting the volcanic ash cloud between Iceland and Svalbard delayed the arrival of the 3 man deployment team at the Russian ice camp Barneo.\u00a0 Three hours after arriving at the camp on April 18, 2010, they departed on an MI-8 helicopter with ITP 38 and AOFB and a temporary camp.\u00a0 The Russian…<\/p>\n","protected":false},"author":83,"featured_media":0,"parent":2077,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"tpl-sidebar.php","meta":{"advanced-sidebar-menu\/link-title":"","advanced-sidebar-menu\/exclude-page":false},"_links":{"self":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2081"}],"collection":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/users\/83"}],"replies":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/comments?post=2081"}],"version-history":[{"count":3,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2081\/revisions"}],"predecessor-version":[{"id":3554,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2081\/revisions\/3554"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2077"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/media?parent=2081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}