Wayfinding and waves

I once had a brief discussion with a much smarter fellow than myself wherein he argued that four was an arbitrary number for cardinal geographic directions. While I concede (now, as I didn’t then) that he is correct from a geometric point of view, there seems to be at least one evident physical reason for the choice: one direction each for sunrise, sunset, and halfway from each to the other.

While Guy Ottewell gives a potential (if esoteric) thesis for why A is the first letter of a couple of different alphabets, I have nothing like the speculative erudition to say whether my guess holds any water. I do know, though, that while useful direction finding tools can be simple, they can also be arbitrary. Polynesian navigators use celestial coordinate systems shaped from the rising and setting of the Sun and other stars, and these coordinate systems are sometimes symmetrical and even, but not always. Navigators also shape their course based upon other information including clouds, wind, sea critters, birds, and other factors.

One of these other factors was brought into sharper focus for me as I flew from Minneapolis to Cleveland last week, passing over Lakes Michigan and Erie on the way. As far as I’ve been able to figure, this trip was at a similar altitude to those from Hilo to Honolulu, flying at approximately 30,000 feet. What struck me as different, though, was that while I was used to seeing the Pacific Ocean with increasing complexity as more and different sets of waves gradually revealed themselves crossing and rolling on its slightly rough skin, I didn’t see any texture of swells on the two Great Lakes.

Having grown up about six blocks from the edge of Lake Superior, and spent time tagging along on boats with my father from a tender age, I can attest that the Great Lakes do possess waves of sufficient size as to be seen from the air. Those waves might not be the sixty-foot seas of the northern Pacific that cause the weather announcers to doubt their script in the middle of reading it, or even the massive rollers that create the fantastic offshore breaks at Peahi near Maui or Mavericks off California, but Great Lakes waves have sunk ships and otherwise imposed their presence in plenty of ways. In short, I was surprised that I couldn’t see anything from the air, even on a relatively calm day.

My guess as to the cause is something called fetch. In this case a noun, fetch refers to the distance across the water that a wind blowing in that direction has to build up waves. While modeling the problem quantitatively is by nature more complicated, fetch can have an effect equal to that of the speed of the wind. It is the biggest reason why small lakes don’t have big waves. Wind speed and fetch can also affect the rate at which waves come in, their period, a characteristic well known and scrutinized by surfers everywhere.

I’ll do some checking with other resources, but I would guess that the tapestry of overlaid swells that help Polynesian navigators orient themselves on the Pacific was also present on Lake Michigan a week ago, and that the chief difference in appearance wasn’t caused by a difference in height of the waves, but rather in their frequency. Lake Michigan is long and thin, perhaps 85 miles wide from Milwaukee, WI on the west side to Grand Haven, MI on the east, but 280 miles north to south from rural Summer Island on the UP to industrial Gary, Indiana. Thus, when the wind is blowing most directions, there is fairly little water to build up long distances between waves. Only if the wind blows due north or due south (winds being named for the direction they are blowing _from_, in most cases) is their enough fetch to produce swells wide enough to be seen from the air.

Any kindly contributors with more knowledge are invited to comment, particularly if you have done some calculations. I am halfway through building a KML file for the trip, and will post it to the comments when it’s finished.

Unintended success, expected failure

Both the elliptical title of this post and the long distance from its antecedent have the same toothmarks: I’ve been reading so much, I haven’t wanted to write anything. I’ve enjoyed being both the style and the substance of The Periodic Table by Primo Levi, and read it interspersed with revisiting some Terry Pratchett and Arturo Perez-Reverte. Also slowly, slowly working my way through Borges Ficciones, wherein the most pertinent quote might be from The Library of Babel: “You, reader, are you sure you understand my language?”

I’m not sure I do, but it is wonderfully toilsome to try.

At any rate, the weather here has been early summer over the weekend–sunny and 70 degrees. The Sun is now transiting the meridian pretty high in the sky, and the skylights in our house are providing lots of light. As the Moon waxes these days, it picks up where the Sun leaves off, and it, too, illuminates our kitchen from above. We planted some roses in the backyard yesterday, and right now a delicate golden kinglet seems to be taking advantage of the legions of buds on the red maple right outside the kitchen window, making a hurried morning meal. For my own hurried morning meal, I cracked open a jar of apple butter received from one of Elle’s comrades at the university. I’m trying to use more glass jars so I can use fewer disposable containers; I’m also trying to buy as much food as possible in reusable containers.

Coffee has been a problem there, although since I buy bulk beans, I usually just end up with the strangely useless paper bags provided at the store. I also usually don’t buy expensive coffee, on the argument that if Kona estate peaberry isn’t laying around, I won’t know the difference. All of this is by way of saying that I was highly amused that Dunkin’ Donuts is marketing their coffee in grocery stores here, where I don’t think there’s an actual Dunkin’ Donuts storefront for a thousand miles: I prefer Dunkin’ Donuts to that Krispy Kreme, which we at least have in Portland. I am amused to no end that I stepped outside habit to buy a name brand product which is then not the product that gives the name. But it is pretty good coffee.

Front-page editors of various newspapers I saw yesterday seem to feel bound to report on the North Korean missle launch, and perhaps in honor of tradition to do it in the same way such things were reported during the cold war. Although I haven’t seen anybody labelled ‘Reds,’ yet. Perhaps they are referring to the limited historical and belligerent importance when they use smaller type for that headline than for budget stuff. Or perhaps they have taken notice, as Jeffrey Lewis has, that for as much as North Korea wants to impress the world by being a scary nuclear power, they are actually 0 for 3 with these kinds of things.

Sure, they did prove to their own citizens that they are still defiant, but that doesn’t seem too important right now. The NORK government is also still trying to tell everybody that they got a satellite into orbit, but people seem to be paying more attention to the statement by Obama, encouraging renewed consideration of the Comprehensive Test Ban Treaty.

That’s an unintended success.

magma, ice crystals, land ownership

Well, if I can say something without jinxing it, it appears as though our two weeks of winter may be over. Not but what it won’t be grey and rainy for a while yet, but the incipient buds are swelling more greenly on their socially networked branches. The leaves cluttering the sidewalks are from the sweetgums, and most of them only just fell within the last month. We’ve had some sunny warmth here and there, and while I haven’t seen any hummingbirds yet, the Steller’s Jays have been joined by squads of robins.

But the thing that really brought a sense of seasonal change for me was at the end of the cold snap we had in December. Hardly seems fair of me to use that term, when Fairbanks has been pretty chilly by comparison, but people take notice when we get a weeks worth of heavy frosts in Corvallis. At any rate, on about 29 December, I woke to find cirrus clouds covering most of the sky, and causing a strong, beautiful 22 1/2 degree halo around the Sun. I’ve long since given up any pretensions to being able to photograph such phenomena, so I contented myself with staring upward for several blocks on the way to work.

21,483 calls in 36 years

It’s been more than a week, and I still am saddened when I think of the loss of Phil Rounds. Ben Fleagle already did a better job than I did talking about it, and was closer to the loss. Right now, I feel pretty close, though. My thoughts go out to all in the Great White North.

And there are many who also appreciate the efforts of those who show how he was missed. Staff at the News-Miner did an excellent job with a several articles and an obituary. While I’m at it, I’d like to thank Todd Shechter for several email forwards, Josh Zwart for the thirty second version of A-shift history and pumpkin pie, and my wife for her diligence on Facebook.

But I think the most impressive is this video. Taken by Carol Falcetta, it shows the procession down University Avenue in Fairbanks towards Phil’s memorial service. The music is very nice, and the video itself shows some small measure of the respect this man held. First of all, remember that every engine pictured represents an entire department that committed to sending a crew for this. Also, for those of you fire service folks out there, wait until the end and count the number of law enforcement. Try to imagine another firefighter getting that kind of help from cops.

We’ll miss you, Phil.

The Parting Glass

I was always the awkward kid. The one who read too much and played too little; not strong, not brave, not confident. I was that kid well into my teens and if you watch me now, you’ll still see it occasionally. I don’t quite know how, therefore, I decided to be a firefighter: full-time for a few years, a volly for a few more, and now getting lost in the woods on a regular basis.

Maybe blame my roommate Myles, who talked me into taking an EMT class, or the instructor of that class, the incomparable Deena Thomas (nee Stout). Maybe blame Bud Rotroff, who made clear from the first Fire Science class I took with him that this was where serious people lived. But certainly, a great share of the blame can be laid on Battalion Chief Phil Rounds, who commanded respect for the University Fire Department from the first moment he entered a room. Ben Fleagle has written it already, all I want to do is lend my own voice to talking about a great guy I knew, who passed away a few days ago.

(mostly) Northern roundup

Kyle Hopkins kicks ASS! Just heard him interviewed on NPR about an Alaska politics article he wrote for the ADN, and I was both thrilled to hear about someone I had lost touch with, and relieved that so sharp a wit is covering the important Stevens-Begich Senate race closely.

Begin obligatory election response: pretty weird that the three most hotly contested (or at least most drawn-out) Senate races were the three states I was most interested in: AK (see above), MN, OR. End obligatory election response.

I’m just starting Rashid Khalidi’s book Resurrecting Empire, which doesn’t seem designed to flagellate liberal guilt so much as actually educate a willing audience about colonialist history from the Eastern Mediterranean to the Indian subcontinent. A good book, and I liked it even more when I found out that he’s almost as dangerous as Bill Ayers.

National Geographic has a ten-page cover article on light pollution out this month, and we happily have our first clear night in about two weeks (not that that’s a record or anything–Alicia tells me that she remembers Kodiak going for something like sixty straight days of rain once, and nobody was talking about records being broken) Still, though, it is crisp and cool tonight. Jupiter looked bright until I saw Venus, and Manaiakalani is setting in the west as Ke ka o ka Makali`i is rising in the east. Even though I know something about how bad light pollution really is, I am reassured that I showed my nephew the same two planets and some of the same stars from the East River about a month ago.

It’s an East Coast-West Coast thing, pt 1

Once again, I find that when I settle in to my life, finding few things worth blogging about, I am unsuited to change pace when I do bump into something blogworthy. Also, since I haven’t had an iPhone implanted directly into my brain yet, I still need to be near a computer with internet access for long enough to type a post. Tricky.

Anyway, on Wednesday I got to see both the Atlantic Ocean and the Pacific in a single day. While transcontinental flights are now so common that almost no one bothers to call them transcontinental anymore, I still think it is pretty cool. At the end of our trip to New York we took off from JFK which, like most other infrastructure in New York City, seems to be much too big, old, and held together by a combination of rust and duct tape to actually survive the traffic it handles. The flight landed at Long Beach, CA, and its airport provided a stark contrast in that regard.

Less is more. Literally.

I’m very excited to have started reading The Social Life of Information, a book which simultaneously supports many of the same conclusions about information theories I’ve read in other works I’ve liked, and blows my hair back with new stuff.

The concept in the introduction of that work that could perhaps be approximated by the old adage that only ten percent of communication is carried by the words spoken in a conversation, with the other ninety left to tone, body language, eye contact, et cetera, is remarkably similar to a conversation I had yesterday at work. Speaking to a gentleman who turned out to be an electronics engineer and music buff, we had a fairly intense conversation about what equipment produces the best quality of sound. While he has more specific knowledge than I, our consensus was that older equipment sounds better for all its messiness of being analog, vinyl, or whatever, than the truncated, cleaned up electronic equipment now so common.

Offer not avaliable in Alaska

With what I think many readers will agree is a barely believable level of Alaska buzz in the news these days (missing, unfortunately, some of the most important stories) I just thought I’d toss out a couple of observations and links to Alaska sources, not least of all to show some kind of sympathy to all the national beat reporters currently stuck in Wasilla.

If news about the Permanent Fund Dividend hasn’t gone national yet, it will soon (sorry, Brandee) as it was disbursed late last week. For those unfamiliar with this quaint custom, it refers to a check qualified residents of the state of Alaska get each year. Kind of a reverse income tax. Let me hasten to say that you shouldn’t pack your bags and your parka immediately. First of all, do the simple math that the more people who move there, the smaller the PFD gets. Also, you may not live in Alaska unless you can come to terms with the fact that, at any moment, you may be forced to wear bunny boots. Seriously.

I’m late for the (non?)-event

While I am interested in the news from the startup of the LHC, I think the event has already been well-covered by intellects vaster and with much closer knowledge than me.

Stay tuned for rhetorical analysis, though.