Showing posts with label geography. Show all posts
Showing posts with label geography. Show all posts

Friday, July 31, 2009

Milwaukee Trivia Collection - Back to the Future Edition

People clamor for shorter articles, so I present the first in a series of Milwaukee-oriented trivia collections randomly organized into arbitrary themes. Today: I link Milwaukee's history with Back to the Future because of a note listing the time and date a building was struck by lightning.


Ten Years Early; One DeLorean Short


Flux capacitor not fluxing and out of plutonium? The Wells Building on Wisconsin Avenue was struck by lightning on July 9th, 1945 at 3:45pm. Unfortunately old ladies won't be handing out fliers asking you to save the clocktower; there aren't any clock faces on the building.

Thinking of speeding down Wisconsin Avenue in order to hit a metal wire at 88 miles per hour? Milwaukee's mass transit might have something to say about that. Not only would you have to contend with an abundance of streetcar wires, you'd also have the streetcars themselves, which would still be around for nearly a decade.


"Tab? I can't give you a tab unless you order something."

Putting aside the fact that Marty orders a drink marketed towards women, Tab did not exist until 1963. Coincidentally (in the realm of missing beverages), Milwaukee didn't have any taverns on record in the 1920s. Still want to wet your whistle? The Milwaukee city directories can point you to page after page of soda fountains.


Road names? Where we're going we don't need... road names.

There's plenty of dispute over the origin of the city of Milwaukee's name. But many of the streets have unique stories as well. Some changes came through convention, some came through history, and some came because urban planners like trying to confuse Polish immigrants.

As mentioned previously, Milwaukee went through many street renaming phases, but the most extensive happened in 1930. Almost every East-West street in East Milwaukee had a different name before the 1930s. Directional indicators were appended to street names (making something like Wisconsin Avenue into East Wisconsin Avenue and West Wisconsin Avenue - or something more fun like changing Aldrich Street into East Bay Street and South Bay Street). Unfortunately, they also decided to move the numbered streets as well.


View Larger Map

The city of Milwaukee does not have a Main Street (although Brown Deer Road becomes Main Street in Waukesha County). Broadway was formerly Main Street, before the name was changed in 1871.


The only reasonable explanation is that it's the main street to use to get out of the city, right?

Thursday, March 5, 2009

Arabian Golf

The Persian Gulf has been a hotspot of contention ever since some Sumerians decided they wanted to live next to each other a few thousand years ago. Recently, Arab dominated lands have referred to the body of water as the Arabian Gulf, which has led to a vehement outcry among Iranians (or Persians, for anyone alive before 1935). This nationalism has evolved to the extent that Iran now has a Persian Gulf Day (on April 29th, in case you planned on taking the day off). You might also notice the rather undiplomatic language that seems to permeate Iranian literature on the subject. To their credit, the UN and some random guy at MIT (someone in Iranian Studies, anyway) have determined that Persian Gulf (or variations thereof) has functioned as the de facto name for the gulf in European circles for centuries and should stay that way. I'm not really sure where the Arabian prompt to change the name is coming from - they have a perfectly fine Red Sea to the west that could do with a spruced up name. Maybe they're hoping the next war in the area to be a more eponymous Arabian Gulf War instead of a Persian Gulf War.

Now, my History 104 course with Professor Wick also featured a bit of discussion on the popular gulf (he also writes a mean introduction to the History of the Peloponnesian War by Thucydides). One of my favorite professors through a mixture of immense topical knowledge with dry wit, his lectures provided an exceptional historical background for future learning and critical thinking. When covering the topic of ancient civilizations in Mesopotamia, the Persian Gulf featured in the topical discussion to a fair extent. (Un)fortunately, we didn't cover any sort of historiography on the subject of the gulf's geography.

The depth of the modern gulf does not exceed 90m, which is helpful since sea levels rose by about 90m when the glaciers from the last ice age melted. The Persian Gulf of the time was likely a fertile valley, but there was no recorded history at that point. The Sumerian great flood (an early analogue to the Biblical tale of Noah) is likely unrelated to the inundation (or Deluge, if you're still going all Biblical on me) of the Persian Gulf. The gulf sits at the collision zone of the Eurasian and Arabian tectonic plates which still periodically undergo tectonic activity related to orogeny (that is: mountain upheaval and usually accompanying subsidence somewhere else).

For quite a while the historical coastline of the Persian Gulf was believed to have been between about 200 kilometers to the northwest of its present position. An archeological geologist named Jacques de Morgan theorized around 1900 that the Persian Gulf had slowly been filling in with sediment deposited by the Tigris, Euphrates, and Karun rivers. He suggested that the Tigris and Euphrates emptied into the gulf without forming a confluence (the Shatt al-Arab estuary (or the Avrandrud, if you're Persian - not to be confused with the Evinrud)), and that the Karun river's sediment formed a series of shoals, which eventually built up into the modern shoreline. Through an in-depth survey of archeological sites in Mesopotamia, de Morgan hypothesized that the coast of the Persian Gulf would have been near Baghdad in the 4th millennium BC... Never mind that his use of historical sites relied on his own survey of historical voyages whose point of origin we still don't definitively know (turns out you can say you've found anything if no one knows the actual location).


There are a few problems with de Morgan's assertion (besides his mélange of potentially made-up historical sites). Much of the rock in the area appears to be from freshwater sediment. There's also the problem of Lake Hammar in southeastern Iraq which miraculously hasn't really filled with sediment and wasn't there six thousand years ago. While sedimentary accretion is an accepted geological phenomenon, de Morgan was missing a few important bits of information (mostly the geology of his archeological geology).


The predominant theory behind the coastline of the Persian Gulf seems to still be Lees and Falcon's subsidence theory. With their fancy use of geological sampling, they hypothesized that the Persian Gulf had intermittently undergone (and continues to undergo) subsidence, which counteracts the silt deposits to a great extent. Iraq collides with Persia building mountains, but the creation of mountains requires a complementary subsidence zone. So, the story of Noah had it wrong: the land wasn't being flooded by water, the water was being flooded by land (...and was slowly sinking to cover it up, like some geologist-fantasized episode of CSI). Sure, Noah's flood is supposed to be from rain and rivers overflowing, but you can't have quality jokes and accuracy, what do you think this is the Daily Show?

Through the use of aerial photography and charts from the 1800s, Lees and Falcon determined that the primary coastal change was a migration of the Shatt al-Arab's output further to the northeast. Subsidence and silt deposits have resulted in some ancient sites buried under a substantial depth of sediment (and occasionally water) as the shoreline meanders northeast. Or maybe Sumerians were just subterranean, Tolkien-esque dwarves with gills. So maybe in a few millennia the main river outlet into the Persian Gulf will be in Iran and we can avoid squabbles about preferred geographic names. Or half of the region will be buried under ten meters of silt, and everyone will turn into Morlocks. Either way I see a great future for the science fiction community and historians. I preemptively dub it historical futuristic science fiction.


Now we just need to work on renaming Lake Michigan to Lake Wisconsin.