The Norman B. Leventhal Map Center: “Dennis Townsend, a Vermont schoolteacher, created this collapsible, portable, and inexpensive paper globe for students as an alternative to the large, more expensive globes available mainly in schools and libraries.”
NASA Earth Observatory: “In November, the sea ice extent averaged 9.08 million square kilometers (3.52 million square miles)—the lowest November extent in the satellite record. The yellow line shows the median extent from 1981 to 2010, and gives an idea of how conditions this November strayed from the norm.” Also shows sea ice extent for previous years dating back to 1978. Hudson Bay was icebound in November not that long ago.
If all maps must necessarily be selective, choosing what to show and what to leave out, surely map books must do the same. That thought came to mind as I perused Treasures from the Map Room—no relation—a book that presents maps from Oxford University’s Bodleian Library, collected and curated by the Bodleian Map Room’s senior library assistant, Debbie Hall.
“Although maps have formed part of the Bodleian’s collections from early on, they have been collected actively only since around 1800,” Hall writes in the introduction. Broadly speaking, the Bodleian’s map holdings come from a combination of bequests and legal deposit requirements. The latter in particular means that the Bodleian’s holdings of British maps—including virtually every Ordnance Survey map and a large number of commercially published maps—are very extensive. The bequests are sometimes much better known: maps named for their owners and donors rather than their creators—the Gough Map, the Selden Map—falling into the Bodleian’s hands.
Hall organizes her selection—some 75 maps—into seven chapters organized by theme: Travel and Exploration, Knowledge and Science, Pride and Ownership, Maps of War, The City in Maps, Maps for Fun, and Imaginary Lands. Sometimes those themes make for unlikely juxtapositions: Hall mentions the Tabula Peutingeriana and American highway maps in very nearly the same breath; and Maps for Fun, a chapter dealing with tourism, recreation and travel, includes a 15th-century Holy Land pilgrimage map—Reuwich’s Peregrinatio in Terram Sanctam—alongside the MountMaps 3D Navigator Map. But apart from that the chapters present us with some very interesting maps indeed: Travel and Exploration gives us the Gough and Selden maps; Knowledge and Science discusses Mercator, Ortelius and early astronomical maps, John Speed, Christopher Saxton and the Ordnance Survey; Maps of War gives us fortifications and plans, siege and trench maps, but also silk escape maps of World War II; Imaginary Lands ranges from Hole’s Poly-Olbion maps to Leo Belgicus, Tolkien and Lewis, and the art of Layla Curtis.
We get, in other words, a taste of just about everything—but only a taste. The breadth of Treasures of the Map Room is both a blessing and a curse. We’re made aware of the volume and diversity of the Bodleian’s map holdings, but we never get a chance to drill down beyond the most cursory of examinations, never more than one example of something. On the other hand, Hall’s approach brings to the fore maps that might not otherwise be included in books like this—books that can privilege the rare and the ancient over the more mundane but more significant. For example, the map I found myself staring at the most was the 1864 Ordnance Plan of the Crystal Palace and its Environs, a 1:2,500 map of incredible detail and delicacy. You might find yourself lingering over some other map. Discoveries like this are, I suspect, the whole point of book that is, after all, about a library’s hidden treasures.
I received a review copy from the North American distributor for this book, the University of Chicago Press.
I was three years old when this map was released. When I was at Moore Elementary (home of the fighting Armadillos!) in the late 1980s, and early 1990s, I specifically remembered this map because it was huge! The Natural Heritage Map of Texas is 4-feet by 4-feet, and it hung in the school cafeteria, to the left of the stage where so many school assemblies had occurred. The map is colorful, big and filled with animals. To be honest, at the time, the animals are what drew my attention, but the map always stuck in my mind because it was the first large wall map I had ever seen. More than anything, though, there was an ocelot in my face, and in the face of every other elementary student in the building who walked up to look at this map. At the time, I thought an ocelot was kind of like a mix between a house cat and a lion or a tiger, and a lion or tiger was really cool. I was hooked! I would always look at the ocelot, as well as the other animals, and the map, and think about what it all meant.
Computed communities subject to interpretive analysis. From Nelson and Rae 2016.
Tract-to-tract commutes of 160 km or less. From Nelson and Rae 2016.
A commuter flow-based regionalization of the United States. From Nelson and Rae 2016.
In a paper published in PLOS One, Garrett Dash Nelson and Alasdair Rae explore whether megaregions—i.e., a region centred on a major metropolitan area—can be determined algorithmically, using commuter flow data. In the end they conclude that “any division of space into unit areas will have to take into account a ‘common sense’ interpretation of the validity and cohesion of the regions resulting from an algorithmic approach. For this reason, the visual heuristic method coupled with the algorithmic method offers a good combination of human interpretation and statistical precision.” In the process, they’ve generated a series of maps that are fascinating on several levels, including a final map of megaregions that combines algorithmic results with visual heuristics (i.e., human judgment). [Atlas Obscura]
The second round re-vote of the Austrian presidential election took place yesterday. (The first round took place on 24 April; a repeat of the second round, narrowly won by Alexander Van der Bellen on 22 May, was ordered by the Constitutional Court.) Full, final results are not yet available, but austromorph.space has created the above cartogram of the preliminary results—showing, as you might expect, the strength of winning independent candidate Alexander Van der Bellen in the cities; support for the far-right FPÖ’s Norbert Hofer shrinks when you change from a map to a cartogram.
The Washington Post has six maps of U.S. flights, shipping lanes, electrical transmission lines, railroads and pipelines that highlight “the massive scope of America’s infrastructure” that will presumably be the focus of future Trump administration spending. [Benjamin Hennig]
Something’s going on in the Arctic. As the Washington Post reported last month, the Arctic Ocean was far, far warmer than normal—about 20 degrees Celsius higher than average. (Meanwhile, the air over Sibera is at record cold levels.) According to the Post, the higher temperatures are the result of record low amounts of thinning sea ice, as well as warm air being brought north by an increasingly errant jet stream.
NASA has been tracking sea ice levels and thickness by looking at the age of the ice in the sea ice cap. The video above shows “how Arctic sea ice has been growing and shrinking, spinning, melting in place, and drifting out of the Arctic for the past three decades. The age of the ice is represented in shades of blue-gray to white, with the brightest whites representing the oldest ice.”
The ESA reports that their CryoSat satellite “has found that the Arctic has one of the lowest volumes of sea ice of any November, matching record lows in 2011 and 2012.” The animated GIF below shows the change in November sea ice from 2011 to 2016, as observed by CryoSat.