But he also noted that the ubiquity of smartphones and their magnetometers presents an unprecedented opportunity for studying global changes in the geomagnetic field during significant solar storm events. Under certain circumstances, he concluded, geomagnetic storms could be a significant source of error in compass and other positioning apps. Odenwald found that smartphone magnetometers are capable of detecting the very small magnetic field changes that accompany the strongest geomagnetic storms, especially at higher latitudes in North America, where magnetic field lines converge and dip earthward as they near the magnetic north pole. The Weather Channel Features: Today’s Weather Forecast: - New 15-minute forecast for rain intensity up to 7 hours in the future & radar on your homescreen. He also simulated the storms more directly by putting the phones into controlled magnetic fields. Download The Weather Channel to get you through storm season, hurricane season & extreme weather warnings. In lieu of the Sun's cooperation, Odenwald used magnetic data from the powerful Halloween storms of 2003 and essentially ran the storms on the phones to see whether their magnetic signals would rise above the level of background noise. Simulated storms were needed, Odenwald said, because his research took place during the recent 11-year solar minimum, when the Sun could not be counted on to provide very much in the way of sunspots and coronal mass ejections that can create significant geomagnetic storms on Earth. To find out whether phones are susceptible to the vagaries of space weather, Odenwald tested the iPhone 6S, Samsung Galaxy Note 5, Samsung Galaxy S8, and Samsung Galaxy S9 in simulated geomagnetic storms. This degradation could be a problem if your target advertising hits in the wrong place or you're performing needle-guided surgery and miss the mark. So, theoretically, they could degrade the accuracy of magnetometer chips. Geomagnetic storms can buffet and temporarily alter the shape of Earth's magnetic field. "Smartphone magnetometers are being commercially explored for applications as diverse as locating customers in shopping malls for targeted advertising, to precision needle-guided surgery," wrote Sten Odenwald, of NASA's Space Science Education Consortium at Goddard Space Flight Center in Maryland, in Space Weather.īut there's a catch. Please see for more information.Cell phone magnetometer chips are being explored as a backup for GPS, which uses satellite signals to triangulate location and thus is often inaccurate or unavailable in places where signals can't penetrate, such as inside large buildings or underground. Please note: This app features Nielsen's proprietary measurement software, which will allow you to contribute to market research like Nielsen's TV Ratings. Get accessible coverage that keeps you up-to-date with KIRO 7 News.Ĭontinued use of GPS running in the background can dramatically decrease battery life. The KIRO 7 News app alerts you to major local news in all areas of Western Washington, including Tacoma, Renton, Everett, Snohomish, Kirkland, Bellevue, Mercer Island, Shoreline, Redmond, Woodinville, Bremerton, Silverdale, Issaquah, Kent, Auburn, Lynnwood, Bothell, Edmonds, Lake Stevens, Marysville, Lakewood, Olympia and Puyallup. News alerts on breaking, developing and major news of the day.Stay up to date with KIRO 7 RealTime Traffic alerts that help you plan your commute. Plan and prepare for your day with KIRO 7 PinPoint Weather forecasts and alerts. Stream live KIRO 7 newscasts directly from your phone or tablet. Get alerts targeted to your location so you know when news happens where you are. With the KIRO 7 News app, you can stay informed on breaking and developing news across Seattle, and all of Western Washington.
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