This interferogram shows the ground displacement caused by last week’s earthquakes in southern California. Produced by NASA’s Jet Propulsion Laboratory, it’s based on synthetic aperture radar (SAR) images from JAXA’s ALOS-2 satellite taken both before (16 April 2018) and after (8 July 2019) the earthquakes. Each colour cycle represents 12 centimetres (4.8 inches) of ground displacement.
In Monday’s xckd, Randall Munroe points out that when it comes to coordinate precision, there is such a thing as too many decimal places.
Europe is in the middle of a severe heat wave. The European Space Agency has released a map of land temperatures in Europe as of 26 June, produced from the Copernicus Sentinel-3 satellite’s temperature radiometer, “which measures energy radiating from Earth’s surface in nine spectral bands—the map therefore represents temperature of the land surface, not air temperature which is normally used in forecasts. The white areas in the image are where cloud obscured readings of land temperature and the light blue patches are either low temperatures at the top of cloud or snow-covered areas.”
“An Anciente Mappe of Fairyland,” produced by Bernard Sleigh around 1917, is a marvellous conflation of classical myth and fairy tales. Nearly five feet wide, it was apparently designed to hang in nurseries. The echoes of its design elements can still be seen in later fantasy maps and children’s book illustrations, such as E. H. Shepard’s maps of the Hundred Acre Wood and Pauline Baynes’s maps of Narnia, though none of them are this vibrant.
It was making the rounds a month or two back, probably because a copy was being offered for sale: Atlas Obscura, Kottke. High-resolution digital versions are available via the Boston Public Library’s Leventhal Center, the British Library and the Library of Congress; the Leventhal’s reproduction is is much more brightly coloured and in the best shape. The map came with an accompanying booklet.
Previously: The British Library on Fantasy Maps.
By law, I am required to share every xkcd comic about maps. Today’s makes great fun of pop versus soda maps—the maps showing where in the U.S. carbonated beverages are referred to as pop versus where they’re referred to as soda. Randall takes things to their ludicrous extremes, as he is, by law, required to do.
Everything under the sun can be expressed as a Tube map. Including, as blogger Camestros Felapton demonstrates above, Ursula K. Le Guin’s Earthsea books. A glance at the original and official maps of Earthsea reveals that world as an intricate, almost overwhelming archipelago: Camestros’s map, like all good transit diagrams, expresses the books as journeys between points.
Last Friday’s xkcd suggests that the Mercator projection’s reputation can be used to convince anyone of any false geographical fact.
Not that I’d suggest you do that, mind. No.
Londonist’s Fake Britain map: “We’ve put together a map of fictional locations from film, TV, literature and other sources. Take a look around this alternative nation and see how many places you recognise. From Judge Dredd to Vanity Fair, it’s all here.
“The vast majority of entries are well defined geographically. Some—such as Beanotown and Blackadder’s Dunny on the Wold—are a little more nebulous, but we’ve added them for fun. Hogwarts is an unmappable location (unless it’s a Marauder’s Map you’re looking at), but we’ve had a go anyway.”
They’re looking for additions and corrections to the map: this is a work in progress. [Scarfolk]
The latest cartoon from Itchy Feet, a comic about travel and language by filmmaker Malachi Rempen, is a “Map of Every European City.” In the comments, the cartoonist says, “Having been to every single European city, I can safely say with confidence that they all look exactly like this.” I don’t think he’s wrong.
The dots don’t represent anything in particular, nor is their number and placement indicative of any kind of data. But when you’re looking at them, all spread out on a map of the United States like that—it’s hard not to be a little blown away.
Seven hundred of them. Seven hundred dots. That’s more than 500 dots—well on the way to 1,000. That could represent 700 people, or crime scenes, or cities. Or something that happens in this country every 20 seconds. These dots could potentially be anything—they’re red dots, so they could definitely mean something bad.
Whatever they might be, there’s no unseeing these dots.
Carbon monoxide released into the atmosphere by the California wildfires is drifting across North America in concentrations sufficient to turn up on the Atmospheric Infrared Sounder (AIRS) on NASA’s Aqua satellite. A series of maps showing CO concentrations in the United States between 30 July and 7 August, using AIRS data, have been combined into the animation above.
Previously: Mapping the Northern California Wildfires.
Landsat observations have charted the erosion of the banks of the ever-changing Padma River, a major distributary of the Ganges in Bangladesh. This is vividly shown in this animation produced by NASA Earth Observatory, which “shows 14 false-color images of the Padma river between 1988 and 2018 taken by the Landsat 5 and 8 satellites. All of the images include a combination of shortwave infrared, near infrared, and visible light to highlight differences between land and water.” More on the erosion of the Padma River here.