https://pinboard.in/u:jm/public/ recent bookmarks from jm 2025-07-21T12:39:44+00:00 https://gizmodo.com/android-phones-can-detect-earthquakes-before-the-ground-starts-shaking-2000629636 jm“The global adoption of smartphone technology places sophisticated sensing and alerting capabilities in people’s hands, in both the wealthy and less-wealthy portions of the planet,” the researchers, including Richard Allen from the University of California in Berkeley’s Seismological Laboratory, wrote in the study. “Although the accelerometers in these phones are less sensitive than the permanent instrumentation used in traditional seismic networks, they can still detect the ground motions and building response in hazardous earthquakes.” According to the study, 70% of the world’s smartphones are Android phones, which by default come with the aforementioned sensing and alerting capabilities. From 2021 to 2024, the AEA system detected an average of 312 earthquakes per month across 98 countries. The earthquakes had a magnitude between 1.9 and 7.8, and the system alerted users of earthquakes at or over a magnitude of 4.5, averaging around 60 events and 18 million alerts per month. The AEA system also collected user feedback, revealing that 85% of users who received alerts experienced shaking, with 36% receiving the alert before, 28% during, and 23% after the shaking began. ]]> seismic data android phones mobile-phones earthquakes science alerting earth https://pinboard.in/ https://pinboard.in/u:jm/b:7645882aab75/ 2023-07-03T10:52:19+00:00 https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL103553 jm papers bacteria life tectonics earth climate iron science geology https://pinboard.in/ https://pinboard.in/u:jm/b:0ab08c4eb0ae/ 2021-10-04T21:35:38+00:00 https://www.nature.com/articles/d41586-021-02606-3 jm earth co2 microsoft stripe carbon carbon-capture climate-change net-zero https://pinboard.in/ https://pinboard.in/u:jm/b:ff2868565800/ 2019-09-30T09:26:51+00:00 http://blogs.discovermagazine.com/crux/2018/07/13/krakatoa-sound-wave/ jmThe Krakatoa explosion registered 172 decibels at 100 miles from the source. This is so astonishingly loud, that it’s inching up against the limits of what we mean by “sound.” When you hum a note or speak a word, you’re wiggling air molecules back and forth dozens or hundreds of times per second, causing the air pressure to be low in some places and high in other places. The louder the sound, the more intense these wiggles, and the larger the fluctuations in air pressure. But there’s a limit to how loud a sound can get. At some point, the fluctuations in air pressure are so large that the low pressure regions hit zero pressure—a vacuum—and you can’t get any lower than that. This limit happens to be about 194 decibels for a sound in Earth’s atmosphere. Any louder, and the sound is no longer just passing through the air, it’s actually pushing the air along with it, creating a pressurized burst of moving air known as a shock wave.[...] Amazingly, for as many as 5 days after the explosion, weather stations in 50 cities around the globe observed this unprecedented spike in pressure re-occuring like clockwork, approximately every 34 hours. That is roughly how long it takes sound to travel around the entire planet. ]]> sound shockwaves earth krakatoa disasters volcanos eruptions noise decibels https://pinboard.in/ https://pinboard.in/u:jm/b:d29b8bea64eb/ 2019-07-29T11:33:23+00:00 https://scripps.ucsd.edu/news/research-highlight-loss-arctics-reflective-sea-ice-will-advance-global-warming-25-years jm“Losing the reflective power of Arctic sea ice will lead to warming equivalent to one trillion tons of CO2 and advance the 2ºC threshold by 25 years. Any rational policy would make preventing this a top climate priority for world leaders,” said Ramanathan, a professor of atmospheric and climate sciences at Scripps. [....] Computer forecast models are actually underestimating the extent of this trend.  “We analyzed 40 climate models from modeling centers around the world,” said Eisenman, a professor of climate, atmospheric science, and physical oceanography at Scripps. “Not a single one of the models simulated as much Arctic sea ice retreat per degree of global warming as has been observed during recent decades.” ]]> arctic climate-change climate global-warming fear ice earth https://pinboard.in/ https://pinboard.in/u:jm/b:2cf381505420/ 2019-04-25T10:25:41+00:00 https://threadreaderapp.com/thread/1119495699408801792.html jm racism fascism climate-change extinction earth climate-breakdown migration refugees walls borders future https://pinboard.in/ https://pinboard.in/u:jm/b:366ce7f38585/ 2018-10-16T10:43:51+00:00 https://sluggerotoole.com/2018/10/12/bitcoin-must-die/ jmIf Bitcoin were to cease trading tomorrow, 0.5% of the world’s electricity demand would simply disappear. This is roughly equivalent to the output of ten coal-fired power plants, emitting 50 million tonnes of CO2 per year – which would cover one year’s worth of the carbon emission cuts required to limit temperature rises this century to 2C. It is not a solution by itself, but it would be a good year’s work. Bitcoin is made from ashes, and if ashes were legal tender, humanity would burn everything in sight and call it progress. ]]> environment bitcoin ecology future earth cryptocurrencies pow electricity climate-change https://pinboard.in/ https://pinboard.in/u:jm/b:c398516a443f/ 2018-10-11T11:17:14+00:00 https://wanderinggaia.files.wordpress.com/2010/03/how-to-survive-the-coming-century-environment-25-february-2009-new-scientist.pdf jm earth new-scientist climate fear https://pinboard.in/ https://pinboard.in/u:jm/b:0e8e828c21d8/ 2018-03-30T20:58:18+00:00 https://medium.com/planet-stories/earths-wonders-like-you-ve-never-seen-them-before-ac9e2f39aa56 jm via:kokogiak pics photos satellite mapping earth space wonders oblique https://pinboard.in/ https://pinboard.in/u:jm/b:fc11f53766f7/ 2017-07-11T15:55:49+00:00 https://www.theatlantic.com/science/archive/2017/07/a-road-trip-to-the-end-of-the-world/532914/ jm“what I like to talk about is ‘the Great Weirding’ and not just the Great Dying because the Great Dying seems to have been a relatively quick event at the very end. But if you just talk about the Great Dying you’re missing all of this other crazy stuff that led up to it,” he said. “The Earth was getting really weird in the Permian. So we’re getting these huge lakes with these negative pHs, which is really weird, we don’t know why that happened. Another thing is that the whole world turned red. Everything got red. You walk around today and you’re like, ‘Hey, there’s a red bed, I bet it’s Permian or Triassic.’ The planet started looking like Mars. So that’s really weird. We don’t know why it turned red. Then you have a supercontinent, which is weird in the first place. Plate tectonics has to be acting strangely when you have all the continents together. Eventually it rifts apart and we go back into normal plate tectonics mode, but during the Permian-Triassic everything’s jammed together. So there has to be something strange going on. And then at the end, the Earth opens up and there’s all these volcanoes. But we’re not talking about normal volcanoes, we’re talking about weird volcanoes.” ]]> extinction history geology permian-era earth climate-change carbon-dioxide scary pangaea https://pinboard.in/ https://pinboard.in/u:jm/b:f88607f61f61/ 2017-07-11T14:21:19+00:00 http://nymag.com/daily/intelligencer/2017/07/climate-change-earth-too-hot-for-humans.html jmThe Earth has experienced five mass extinctions before the one we are living through now, each so complete a slate-wiping of the evolutionary record it functioned as a resetting of the planetary clock, and many climate scientists will tell you they are the best analog for the ecological future we are diving headlong into. Unless you are a teenager, you probably read in your high-school textbooks that these extinctions were the result of asteroids. In fact, all but the one that killed the dinosaurs were caused by climate change produced by greenhouse gas. The most notorious was 252 million years ago; it began when carbon warmed the planet by five degrees, accelerated when that warming triggered the release of methane in the Arctic, and ended with 97 percent of all life on Earth dead. We are currently adding carbon to the atmosphere at a considerably faster rate; by most estimates, at least ten times faster. ]]> climate future grim climate-change extinction earth carbon anthropocene https://pinboard.in/ https://pinboard.in/u:jm/b:4d1d5fbe205b/ 2015-11-16T15:21:32+00:00 http://boingboing.net/2015/11/16/our-generation-ships-will-sink.html jm earth future kim-stanley-robinson sf space https://pinboard.in/ https://pinboard.in/u:jm/b:097e4c6d7d2d/ 2015-07-27T16:11:31+00:00 https://medium.com/matter/it-s-not-climate-change-it-s-everything-change-8fd9aa671804 jm climate climate-change margaret-atwood long-reads change life earth green future https://pinboard.in/ https://pinboard.in/u:jm/b:8cfdcc804e08/ 2015-05-18T09:26:15+00:00 http://science.howstuffworks.com/environmental/earth/geophysics/secrets-of-gravity.htm jm gravity canada geode earth science hudson-bay mass https://pinboard.in/ https://pinboard.in/u:jm/b:d20d5a2d2b69/ 2014-01-05T21:28:54+00:00 http://earth.nullschool.net/ jm earth map visualization weather javascript d3.js dataviz wind forecasts maps https://pinboard.in/ https://pinboard.in/u:jm/b:524242fcf862/ 2014-01-02T11:13:01+00:00 http://www.frontiersinzoology.com/content/10/1/80/abstract jmDogs preferred to excrete with the body being aligned along the North-south axis under calm magnetic field conditions. ]]> dogs poo excrement shit magnetic-field earth zoology papers https://pinboard.in/ https://pinboard.in/u:jm/b:29a904b4e5bc/ 2013-08-29T20:59:15+00:00 http://blog.forecast.io/how-quicksilver-images-are-generated/ jm quicksilver forecast forecast.io neural-networks ai machine-learning algorithms weather geodata earth temperature https://pinboard.in/ https://pinboard.in/u:jm/b:38284b85153b/ 2011-09-25T21:05:13+00:00 http://flowingdata.com/2011/09/22/rectangular-subdivisions-of-the-world/ jm maps mapping bounding-boxes world earth geodata geotagging twitter https://pinboard.in/ https://pinboard.in/u:jm/b:b80afccedd9c/