Great infographic today thanks to the US Coast Guard – a comprehensive review of the world’s major icebreakers. My next task, sail on all of them! From the United States Naval Institute: “The Coast Guard Office of Waterways and Ocean Policy (CG-WWM) began producing the chart of major icebreakers of the world in July 2010. Since then, we have gathered icebreaker information and recommendations from a variety of sources and experts, including icebreaker subject-matter experts, internet posts, news updates, Arctic experts and Coast Guard offices with icebreaker equities. We validate our information within the public forum and update the chart at least semi-annually based on new information and feedback. This chart represents the Coast Guard’s current factual understanding of the major icebreaker fleet. This chart is not intended for icebreaker fleet comparisons and no inference should be drawn regarding a country’s icebreaker “ranking” against another.” U.S. Coast Guard's 2013 Review of Major Icebreakers of the World | USNI News.
Last night I took a class through Denver’s new learning startup Dabble on MIG Welding. The class was taught by structural engineer Nick Geurts of Martino & Luth, Inc.. During the class, hosted in Nick’s backyard garage and workshop, we covered the very basics of welding techniques, and then some of the specifics of entry level MIG Welding on mild steel. After welding a few pieces of steel together, I felt pretty confident in making a basically usable weld – although certainly not perfect or professional. Mig Welding, from Wikipedia: Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) welding or metal active gas (MAG) welding, is a welding process in which an electric arc forms between a consumable wire electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to melt, and join. Along with the wire electrode, a shielding gas feeds through the welding gun, which shields the process from contaminants in the air. The process can be semi-automatic or automatic. A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as alternating current, can be used. There are four primary methods of metal transfer in GMAW, called globular, short-circuiting, spray, and pulsed-spray, each of which has distinct properties and corresponding advantages and limitations. Find out more about Nick’s class at Dabble.
NASA recently revealed that a spot in Antarctica just hit a record -135.3 degrees F below zero – that’s cold! In my time at the south pole, the coldest I experienced was -60F – not even close to the record. Fron NBC News: Ice scientist Ted Scambos at the National Snow and Ice Data Center said the new record is “50 degrees colder than anything that has ever been seen in Alaska or Siberia or certainly North Dakota.” “It’s more like you’d see on Mars on a nice summer day in the poles,” Scambos said, from the American Geophysical Union scientific meeting in San Francisco Monday, where he announced the data. “I’m confident that these pockets are the coldest places on Earth.” Here’s a quick explainer video. Me in the South Pole Ice Tunnels
Last Austral Summer, I spent 3.5 months living at the Amundsen-Scott South Pole Station, Antarctica. Among my many jobs on station, one of the most rewarding was the work I did with the Askaryan Radio Array drill and deployment teams. During my time working with the ARA, I got to spend some good time with Scientist Terry Benson. Here’s his excellent slide deck going over the science he’s working on at the South Pole, including details of the ARA Drill Rig I helped construct and test. Specifically, I helped construct the water tank overflow gutter, wired up the emergency stop switches, troubleshoot the main pump system, maintained the hose bindings, and tended to the drill as it operated. Innovations in Hot Water Drilling at the South Pole
It’s truly a sad day for Antarctica. Because of the government furlough, science operations in Antarctica is being shut down as funds dry up, as a “result of the absence of appropriation and the Antideficiency Act.”, according to the official USAP.gov website. Amidst all of the other shakeup and struggle operations in Antarctica have gone through in recent years, I’m sad to hear that another setback has fallen on operations on the ice. So much good science and engineering research is being done there, it’s a shame that the small fraction of the budget that is needed to support the USAP has been suspended. A breakdown of the actual cost of the program, from Change.org: The total cost of the USAP program is approximately $350 million dollars. A value added amount of money which is small in terms of the $3.8 trillion dollar total budget that would be trivial not to have congress authorize a portion of it to allow international science to continue. With any luck, the furlough will end soon, and funds will be made available again before too much of the continent has been emptied out. Effects of the shutdown, from Change.org: The effects this shutdown will be the loss of continuity in projects that have been ongoing since the International Geophysical Year (IGY) some 50 years ago. Scientific data such as the Long-Term Ecological Research (LTER) which has been ongoing for 30 years will have a large data gap in at a crucial time in our understanding of climate change. A similar problem would be the abrupt end to 11 years of continuous data on the solar cycle that is used, for example, by the UC Boulder Lidar project. Since solar cycles are 11 years long, missing this last critical bit of data could jeopardize the multi-year investment. Also threatened is our understanding of rapidly changing ecosystems that is being generated by the study of Penguins in the Palmer Peninsula. The full explanation on USAP.gov reads: Planning and Implementation of Caretaker Status for U.S. Antarctic Program October 8, 2013 The National Science Foundation (NSF) is responsible for managing and coordinating the U.S. Antarctic Program (USAP) on behalf of the nation. This includes providing support personnel and facilities and coordinating transportation and other logistics for scientific research. Due to the lapse in appropriation, funds for this support will be depleted on or about October 14, 2013. Without additional funding, NSF has directed its Antarctic support contractor to begin planning and implementing caretaker status for research stations, ships and other assets. The agency is required to take this step as a result of the absence of appropriation and the Antideficiency Act. Under caretaker status, the USAP will be staffed at a minimal level to ensure human safety and preserve government property, including the three primary research stations, ships and associated research facilities. All field and research activities not essential to human safety and preservation of property will be suspended. As NSF moves to caretaker status, it will also …