Wednesday, March 13, 2024

Nice Eclipse Maps - Part 2

As promised from last week's post here are a couple additional sites that nicely visualize the path of next month's eclipse. The first one is from Bloomberg, How to Find the Best Cities to Watch the Eclipse. One of the best things about this page is that it starts with an animated map tracing the path and degree of size of the moon's shadow at various locations during the course of the eclipse's time frame. Here is a still frame from 3:10 PM Eastern time.

This is followed by a map showing the increases in searches for travel to cities in the path of totality. Little Rock has the largest increase in the United States but Mazatlan was even more popular.

Next, there is a dropdown where you can choose from a number of cities to see how much the sun will be obscured along with a time lapse animation,

 and a map showing your city's place in the bands of obscuration.

as well as a map of average cloudiness, though the color scheme is a bit difficult to understand.

Finally there's the National Eclipse site with maps for each state (just Google Maps with lines) 

and lists of all major towns within the zone of totality. This one shows the start times of totality and is color coded by time zone. 

via National Eclipse
At the end is one showing the percentage of obscuration for those unfortunate cities outside the zone of totality.
via National Eclipse


Wednesday, March 6, 2024

A Few Nice Eclipse Maps-Part 1

In a month a total eclipse will make its way across North America. On April 8th the path will travel quickly, (under two hours) from Mazatlán on Mexico's Pacific coast to Newfoundland, Canada and then into the Atlantic Ocean. There are some really nice visualizations of the eclipse's path. I'll show two today and more next week. The first one I saw at the last fall's NACIS Conference in Pittsburgh. 

This visualization by Michala Garrison at NASA, shows both next month's total eclipse and the annular eclipse (where the moon was further from Earth and therefore didn't completely obscure the sun) that occurred on October 14, 2023, right after the conference's end. Garrison spoke at NACIS about how she created this map and you can watch it here. Here is a close up of where the two eclipse paths would intersect (if they were simultaneous) near San Antonio, Texas.

The ovals represent the moon's umbra. If you look closely you can see how she incorporated the city lights visualization. This helps see the urban areas and is also appropriate because it will be dark in along the path for up to a few minutes.

The next visualization is from Andy Woodruff, cartographer and frequent eclipse traveler. This one is a "scrollytelling" visualization. As you scroll downwards the path and umbras move along in time, beginning in Mexico.

The umbra can be moved to any location for a precise look at what areas have the most and least coverage.

For reasons that I don't completely understand (maybe the sun's angle) the umbra flattens out as it progresses. By the time it reaches eastern Canada it is much more of an oval.
He also includes this nice, precisely detailed map of the Dallas area where you can see the eclipse's duration by neighborhood.
Woodruff ends his post with some advice and personal experiences from his eclipse travels. I like this map showing past eclipses he's seen with emojis representing the weather for each one.


Wednesday, February 21, 2024

New Orleans Slave Revolt

Despite what some officials in Florida want to teach, not all enslaved people appreciated the job training they were getting from their benevolent overseers. In fact there were numerous rebellions. The largest one was in 1811 outside of New Orleans. 

The map above is from a story in Nola.com about a reenactment of the rebellion a few years ago. The action had been planned for a long time and began when the plantation owner's slave driver led about two dozen people broke into the house, killed the owner's son and took uniforms and arms from the store house. They planned to march 41 miles east to New Orleans and overthrow the local government but were stopped by the military in Kenner and forced to turn back. A few escaped but most were killed or recaptured.


Wednesday, February 14, 2024

Atlas of the Transatlantic Slave Trade

In response to last week's Black Atlantic post, a reader directed me to the Atlas of the Transatlantic Slave Trade. The Atlas has a companion site,  Echoes: the SlaveVoyages Blog where you can browse through an impressive array of maps produced for the Atlas. Here are the major regions where captives were taken from.

via Slave Voyages

This overview of the slave trade shows how captives were taken not just to the Americas but also to the Middle East, India and even parts of North Africa

via Slave Voyages
By far though, the Americas (especially South) had the largest volume of the slave trade. Here is the volume and direction of the routes to American regions.

via Slave Voyages

There are many more interesting maps to discover at the Echoes site or you can buy the book here.

Wednesday, February 7, 2024

The Black Atlantic

This map was created by Léopold Lambert to emphasize centrality of the Atlantic Ocean to the slave trade.

The map was created for an article in the Funambulist and was recently featured as a “Map of the Week” (yes there are others) for the American Geographical Society’s Ubique blog.

 

Though not explicitly mentioned, the ocean currents are shown and their role in the routes of the ships can be clearly seen.

The article also contains this map by Komla Eza, an artist from Togo showing the triangle trade with the “five changes of matter” in the center.

I have not been able to figure much else about this map so we’ll just enjoy it as art.

Wednesday, January 31, 2024

Indigenous Languages-Part 3

Here is part 3 in what was meant to be a two part series. In between my last two posts, Vivid Maps posted a map of indigenous languages. I think this was just a coincidence. I only saw their post yesterday and I don't think they saw or were reacting to what I posted. Anyway this is a pretty interesting map, originally from Reddit.  

User aofen did a nice job here though the number of languages represented makes it impossible to have a distinguishable color scheme. Especially since the colors run into each other.

The languages chosen for this map have over 25,000 speakers. Southern Quechua (darker yellow on the map below) has the largest number of speakers at 6.9 million. Guarani also has an impressive reach with 6.5 million and is one of two official languages of Paraguay. It's area closely fits the boundaries of that country. Most of these languages are primarily spoken in rural areas.

Some of these languages can be found in the Living Dictionaries site highlighted in my last post. In some cases I suspect the spellings are a bit different because there are some very similar names. 

NOTE: A lot of research went into this map. I have not had the time to verify any of it and am assuming a high level of accuracy and good faith here. One can never be certain with online sources.


Wednesday, January 24, 2024

Map of Endangered Languages - Part 2

Last week's post showed a huge number of indigenous languages throughout the world. Here is a summary (via the Living Tongues Institute) showing hotspots of endangered languages.

The above site has a companion living dictionaries site where you can find a language by map,

zoom closer for more detail,
 

 and open its dictionary.

When opening the dictionary you can see and listen to the pronunciations of the indigenous words.
If geography is not your thing (what?) you can search the sidebar for a specific language.