Archive for the ‘Science’ Category

Location of the eruption on Fimmvörðuháls / Eyjafjallajökull

Monday, March 22nd, 2010

The volcanic eruption on Fimmvörðuháls (next to Eyjafjallajökull) has attracted a lot of attention, but precise data and visualizations of the fissure location have been hard to find.

But I did find data on the location, length and orientation of the fissure in this news article on ruv.is (Icelandic), and that location seems to fit well with an infra-red satellite photo on the Institute of Earth Sciences website. This location and orientation also seems to match the helicopter photos taken this evening — it does seem like the pictures are not taken under as large an angle of incidence as the helicopter’s height would imply, but I suppose that’s hard to eyeball. So this location is probably a fair guess.

I put together the following in Google Earth:

  • this estimated position of the fissure (guessing a length of 750m lengd, in the middle of the 0.5-1km range given on ruv.is).
  • the locations of Baldvinsskáli (mountain hut) and Básar (end of the hiking trail) based on Google Earth map imagery
  • two GPS trails (trail 1, trail 2) posted by travelers on Wikiloc
  • the coordinates of the helicopter TF-SIF when the three photos on the Coast Guard website were taken this evening

The fissure appears to lie right across the Fimmvörðuháls hiking trail, on the Brattafönn (Steep Snow) slope.

Here is a KMZ file for Google Earth with this data, and below is an overview photo of the data, and a close-up showing the fissure crossing the hiking trail.

The images indicate the copyright held by Google and others on map imagery.

Enjoy, and please let me know if some of this can be corrected/improved.

On non-bushy thinking

Saturday, September 29th, 2007

Sagan and the solar system

I’m often asked the question, “Do you think there is extraterrestrial intelligence?” I give the standard arguments — there are a lot of places out there, and use the word billions, and so on. And then I say it would be astonishing to me if there weren’t extraterrestrial intelligence, but of course there is as yet no compelling evidence for it. And then I’m asked, “Yeah, but what do you really think?” I say, “I just told you what I really think.” “Yeah, but what’s your gut feeling?” But I try not to think with my gut. Really, it’s okay to reserve judgment until the evidence is in.

— Carl Sagan, The Burden of Skepticism, in The Skeptical Inquirer, Vol. 12, Fall 1987

Sunset after midnight

Thursday, June 21st, 2007
Tímabelti Íslands

Happy summer solstice, readers near and far (excluding the southern hemisphere). It is today at 18:06 UTC; that’s when the North Pole points closest to the sun.

Here in Reykjavík, sunset tonight is at 00:03. Yeah, three minutes after midnight.

Our time zone designation needs revising at some point.

Busy, busy, busy

Wednesday, May 9th, 2007

Kurt Vonnegut must have been the greatest optimist of all pessimists. His novel Cat’s Cradle ends with a jolly narrative of the destruction of life on Earth; armageddon with a grin.

The book probably does not translate well because Vonnegut seems to love wordplay.

In bokononism, a delightful religion made up by Vonnegut, one major ritual is boko-maru, wherein two people sit barefoot facing each other, “letting their soles meet.”

Cat’s Cradle tells of an ominous invention, a new crystal structure for ice having a melting point of 45.8 °C. Below that temperature, it swiftly crystallizes all water into ice upon contact, including the oceans and the water in the human body. This mischievous material is called ice-nine … which sounds like asinine. Vonnegut must have considered this word a good fit for man’s 20th-century pastime of finding practical, cost-effective ways to demolish the planet.

Reinventing The Wheel

Tuesday, April 10th, 2007

There are two rules of paramount importance in engineering innovation.

  1. never reinvent the wheel.
  2. always break the rules.

So I guess this was only a matter of time. Presenting: TheWheel™.

Meissner and Maharishi

Sunday, April 1st, 2007
Maharishi Mahesh Yogi

Maharishi Mahesh Yogi

<sarcasm>

Founding the Maharishi University of Management in Iowa is just one of Maharishi Mahesh Yogi’s many charitable efforts to the furtherance of human prosperity.

The mathematics course descriptions at this institution hint at major breakthroughs in the interpretation of mathematics. A few examples:

  • Infinity: From the Empty Set to the Boundless Universe of All Sets — Exploring the Full Range of Mathematics and Seeing its Source in Your Self
  • Maharishi Vedic Mathematics: Mathematical Structure and the Transcendental Source of Natural Law
  • Calculus 1: Derivatives as the Mathematics of Transcending, Used to Handle Changing Quantities
  • Calculus 2: Integrals as the Mathematics of Unification, Used to Handle Wholeness
  • Calculus 3: Unified Management of Change in All Possible Directions
  • Calculus 4: Locating Silence within Dynamism

This guru revolutionized the field of national defence last February with his website, “Invincible Defence”. It prescribes no less than the complete eradication of terrorism for good, by measures such as a significant increase in the practice of yogic flying. This makes perfect sense: yogic flyers induce harmony around them which produces the Maharishi effect, much like the harmony of superconductance produces the Meissner effect. Just as a superconductor offers “invincible defence” against magnetic fields, flying yogas erect an impenetrable wall defending their nation from the scourge of terrorism.

Hopefully we will all internalize the yogi’s teachings with an open mind, unimpeded by the notorious arrogance of science.

</sarcasm>