one day at a time…
Sunday, 15 February 2004

Pix Of The Day: Archaeological Remote Sensing
CREDIT: © Philip Greenspun/Photo.net
WHERE: Chaco Canyon, New Mexico. WHAT: ancient cultural site.
MAP: Chaco, NM. Thumbnail click pops-up source page with larger image.

Chaco Canyon © Philip GreenspunThe GHCC (Global Hydrology and Climate Center) — a partnership comprised of organizational elements from NASA Marshall Space Flight Center (MSFC), the State of Alabama's Space Science and Technology Alliance (SSTA), and the Universities Space Research Association (USRA) — provides integrated scientific understanding of the Earth system to enable better decisions improving the global quality of life.

One of the tools used by the GHCC is ARS (Archaeological Remote Sensing), which was used at the Chaco Canyon site in northwestern New Mexico to discover the existence of ancient roadways, otherwise invisible from ground level. Tom Baker has an aerial archaeology web site, which discusses locations and techniques for the technology.

The site, a National Historical Site with World Heritage Status, has been the subject of over a century of study of the Chacoan culture. Following the 1977 discovery by Anna Sofaer of the Sun Dagger, a celestial calendar of the ancient Pueblo Indians, interest intensified. The calendar marks, with precise light patterns, the summer and winter solstices, the spring and fall equinoxes, and the nineteen year cycle of the moon. This recording of sun and moon extremes makes the site unique.

Today's feature picture is Chaco Canyon, taken by Philip Greenspun, the founder of Photo.net. Philip has a photographer's guide to New Mexico. We thought the picture conveyed just the right atmosphere for this exciting place.

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Jules Laforgue (1860-1887)
"Ah! que la vie est quotidienne."
Oh, what a day-to-day business life is.
'Complainte sur certains ennuis' (1885)