Moon The Loon Posted February 5, 2019 Author Share Posted February 5, 2019 https://www.theglobeandmail.com/world/article-check-your-compass-the-magnetic-north-pole-is-on-the-move-2/ Not the best written article, but on target. Link to comment Share on other sites More sharing options...
boestar Posted February 5, 2019 Share Posted February 5, 2019 the north pole has been on the move since there was a north pole Link to comment Share on other sites More sharing options...
Moon The Loon Posted February 6, 2019 Author Share Posted February 6, 2019 3 hours ago, boestar said: the north pole has been on the move since there was a north pole Uhh, no. The magnetic north pole, yes. Link to comment Share on other sites More sharing options...
boestar Posted February 6, 2019 Share Posted February 6, 2019 I thought that was implied Link to comment Share on other sites More sharing options...
Guest Posted February 6, 2019 Share Posted February 6, 2019 Some more on the subject: https://theairlinewebsite.com/topic/450038-magnetic-north-on-the-move/?tab=comments#comment-1741017 Link to comment Share on other sites More sharing options...
Guest Posted February 6, 2019 Share Posted February 6, 2019 Magnetic north pole leaves Canada, on fast new pathby Staff WritersWashington (AFP) Feb 5, 2019 The position of the Earth's magnetic North Pole -- used in navigation systems such as smartphones -- is moving far faster than it has, sending scientists scrambling to put out a new model this week. The magnetic North is the point at which the planet's magnetic field points vertically down. The World Magnetic Model is critical to sea and military navigation -- as well as our ubiquitous smartphones. It normally is updated every five years but the schedule has been pushed forward one year "due to unplanned variations in the Arctic region," according to a statement from the US National Centers for Environmental Information. The discovery of magnetic north in northern Canada dates back to 1831. The wandering point, which long jiggled above Canada and barely moved, is now moving 55 kilometers (34 miles) a year, scientists said. The Earth's magnetic field is generated mainly by movement of the liquid iron that makes up most of the Earth's core, 3,000kilometers (2864 miles) below the surface. That movement is what makes the magnetic poles shift, but the cause of the recent acceleration remains a mystery. So scientists at the American NOAA and Britain's BGS have had to update their model ahead of the late 2019 scheduled deadline. "It's a very slow movement, but it's very real, and over several decades it can be several degrees," said Arnaud Chulliat, geophysicist at the University of Colorado Boulder and NOAA. It does not matter much in the most populated areas, but "near the magnetic pole, the change is faster". The model makes it possible to correct the direction indicated by the compass to find the geographic north, which is fixed. Magnetic North has, over the centuries, moved more or less unpredictably into the archipelagos of northern Canada. Since the end of the 19th century, it has been heading toward Siberia. Since the 1990s, the movement has accelerated, across the Arctic Ocean, from about 15 km/year to 50-55 km/year currently. http://www.gpsdaily.com/reports/Magnetic_north_pole_leaves_Canada_on_fast_new_path_999.html Link to comment Share on other sites More sharing options...
Wolfhunter Posted February 6, 2019 Share Posted February 6, 2019 Maybe it's just me and I shouldn't dwell on a long history of bad luck, but I like magnetic compasses for the same reason I like cash. They both work when the lights go out or the batteries fail. The shift in the magnetic pole toward Russia is racist and clearly Trump's fault, the Democrats have promised an "isogonic" solution. Not aviation related to be sure, but my old Sylva compass has often proven its worth in the company of expensive GPS units. Usually by the time we get back to the Jeep, no one is laughing at it anymore. I once had a dual generator failure in a helicopter too, but the compass worked just fine. BTW, batteries rated for 30 mins only last 18. Then again, being as I'm retired and have a motorcycle, I guess it's no longer any of my business. Link to comment Share on other sites More sharing options...
Moon The Loon Posted February 26, 2019 Author Share Posted February 26, 2019 https://www.livescience.com/9231-earths-magnetic-field-shifts-forcing-airport-runway-change.html : Magnetic north shifting by 30 miles a year, might signal pole reversal The magnetic pole is moving faster than at any time in human history, causing major problems for navigation and migratory wildlife. Bryan Nelson February 5, 2019, 10:19 a.m. Although the embedded 2011 article uses the term "declination" for what we know commonly as "variation," a decent article nonetheless. Another good source of more current relevance: https://www.livescience.com/64486-earth-magnetic-pole-moving.html : Earth's Magnetic Pole Is Wandering, Lurching Toward Siberia By Laura Geggel, Senior Writer | January 14, 2019 06:45am ET Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.