Marie Tharp is the subject of today’s Google Doodle, with an interactive narration of her life story. That story—how Tharp’s pioneering work mapping the ocean floor helped prove the theory of continental drift—is familiar to long-time readers of this blog: this is the 12th post I’ve made about the legendary cartographer. But someone is going to be one of today’s lucky 10,000 because of this, and that’s not a bad thing.
Ortelius was a Google Doodle in May 2018.
Scientists have now mapped the seafloor around the Hunga Tonga-Hunga Ha‘apai volcano, and as a result we have learned just how massive the January 2022 eruption was. By comparing their soundings with 2017 data, they determined that at least 9.5 km3 of material was discharged. Debris was found 80 km from the volcano, and the volcano’s caldera has been replaced by a cavern 850 m deep. More from the NIWA media release and from ABC (Australia).
Previously: Remotely Operated Vessel Maps Tonga Caldera.
The Osher Map Library’s latest physical exhibition, Industry, Wealth, and Labor: Mapping New England’s Textile Industry, opened last Thursday. “Inspired by the map library’s recent acquisition of a collection of textile mill insurance plans and historic maps from the American Textile History Museum, this exhibition addresses the temporal, geographic, and demographic components of New England’s cotton textile industry from the early 19th century until the middle of the 20th century.” Free admission; runs until 30 June 2023.
The Map Room’s Mastodon presence has moved to @maproomblog@mapstodon.space. It just seemed more sensible to be on an instance that focused on the mapping and geospatial community. (By the way, mapstodon.space’s admin has a Patreon to cover the hosting costs: running a Mastodon instance is rather more expensive than running a website.)
Previously: Mastodon for Mappers; The Map Room on Mastodon.
Buckminster Fuller’s Dymaxion map: is the projection it uses patented, trademarked or copyrighted to the extent that you have to pay a licencing fee or face a lawsuit? Daniel Huffman digs into this very question, which apparently has been circulating around the cartographic world for some time. “Here’s the summary of what I’ve concluded: if you don’t pay a license fee before you publish a map that uses the Fuller projection, you may find yourself hearing from the projection’s ‘owner.’ At the same time, I don’t think that the owner (the Buckminster Fuller Institute) has any rights that would actually hold up in court.”
Pointing to Google Maps and Apple Maps, with their extensive street-level and flyover imagery, James Killick believes that maps for the consumer are moving away from symbolic representation and toward creating digital models of the real world that, he says, are not maps. “It’s all part of a trend, a downward trend in my opinion, that will result demise of consumer maps. Contrary to Beck’s approach to distill reality into its essential essence we’re moving in the opposite direction. [¶] We are instead on a path to the dreaded metaverse, a virtual world where we should all be thankful and glad to wander around as legless avatars with the aspirational goal of reaching social media nirvana. I don’t know about you, but, ugh.” [Lat × Long]
Mark Ovenden has launched a YouTube channel focusing on transit map design—which is what you’d expect from the author of Transit Maps of the World (along with other books on transit system design and transport maps: he is by no means a stranger to this blog). It launches today with its first episode, an on-the-ground look at the history of the Madrid metro system and its maps.
There is now a Mastodon instance—mapstodon.space—for map and geospatial professionals and enthusiasts. If it had been up and running when I started The Map Room’s Mastodon account (previously), I might have signed up for it there. (Update Nov. 20: In the end, I’ve moved there: @maproomblog@mapstodon.space.)
It doesn’t matter that much which instance you sign up at (you can connect to any other Mastodon account on any other instance, unless your instance blocks that other instance, which happens when, for example, an instance is full of racist trolls), but instances have local feeds, which is nice when your instance is full of people who share your interests. I’ve already found several familiar faces and/or institutions at mapstodon.space.
“A recently released set of topography maps provides new evidence for an ancient northern ocean on Mars. The maps offer the strongest case yet that the planet once experienced sea-level rise consistent with an extended warm and wet climate, not the harsh, frozen landscape that exists today.” Press release, video, article (JGR Planets). [Universe Today]
A shoutout to Keir Clarke at Maps Mania, whose coverage of election maps is such that whenever I think, “hey, that country just had an election, I ought to write a post collecting some maps of the results,” I usually find that Keir has already beaten me to the punch.
The idea of using low-earth-orbit satellites to provide greater GPS/GNSS accuracy isn’t limited to commandeering the Starlink constellation. The European Space Agency is exploring the idea of using low-flying satellites to increase Galileo’s accuracy and robustness: make it possible to use indoors, make it more resistant to jamming and interference, and enable positioning at the centimetre level. They’re planning an in-orbit demonstration of around six satellites to test the proposition. The satellites would supplement the existing Galileo constellation rather than replace it: for one thing, they would rely on the Galileo satellites’ atomic clocks, which would allow the low-flying satellites to be an order of magnitude smaller in size. [Universe Today]
Benjamin Tran Dinh’s interactive isochrone map of Europe showing how far you can go by train in five hours (previously) has a new variant that does the same thing for 1911 France. Getting closer in time and place to those original isochrone maps. [Maps Mania]
The Ordnance Survey is making a small deal over a so-called “triple alignment” of true north, magnetic north and grid north early this month: “the historic triple alignment will make landfall at the little village of Langton Matravers just west of Swanage in early November and will stay converged on Great Britain for three and a half years as it slowly travels up the country.”
Now, grid north is an artifact of a map projection’s grid lines. On a map grid there’s always some difference between true north and grid north except along the central meridian, which in Ordnance Survey maps is two degrees west of Greenwich. The further away from that central meridian, the greater the difference.
What the Ordnance Survey is hyping is that magnetic north, which is constantly shifting, has moved to a point where magnetic declination (the difference between true north and magnetic north) is zero along that central meridian. Kind of neat—if you’re using an Ordnance Survey map. Because this particular triple alignment only exists for Ordnance Survey maps. It’s all a bit anglocentric, really (especially the bit in the video that describes true north as “the line which runs through Britain to the North Pole”).
According to 9to5Google, Google looks like it’s getting ready to shut down its standalone Street View app (previously). “This standalone app served two distinct groups of people—those who wanted to deeply browse Street View and those who wanted to contribute their own 360° imagery. Considering the more popular Google Maps app has Street View support and Google offers a ‘Street View Studio’ web app for contributors, it should be no surprise to learn that the company is now preparing to shut down the Street View app.” If their report is correct, the shutdown would take place next March. [The Verge]
Given what’s been going on with Twitter recently, I figure that a Mastodon account for The Map Room might be useful, at least for those who feel the need to jump from Twitter to Mastodon. You can find it here: @maproomblog@mastodon.social Update Nov. 20: I’ve moved it to maproomblog@mapstodon.space.
I have no plans to shut down any of The Map Room’s other social media presences (Facebook, Tumblr, Twitter)—not at this time, anyway. And you can always subscribe via RSS or email—no intermediating platform required.
