LEONIDS AT PHOENIX, ARIZ

Radar-optical leonids

We present joint optical-radar observations of meteors collected near the peak of the leonid activity in 2002. We show four examples of joint detections with a large, phased array L-band radar and with intensified video cameras. The general characteristic of the radar-detected optical meteors is that they show the radar detection below the 5 termination of the optical meteor. Therefore, at leas...

Radar and optical leonids

We present joint optical-radar observations of meteors collected near the peak of the Leonid activity in 2002. We show four examples of joint detections with a large, phased array L-band radar and with intensified video cameras. The general characteristic of the radar-detected optical meteors is that they show the radar detection below the termination of the optical meteor. Therefore, at least ...

H2O at the Phoenix landing site.

The Phoenix mission investigated patterned ground and weather in the northern arctic region of Mars for 5 months starting 25 May 2008 (solar longitude between 76.5 degrees and 148 degrees ). A shallow ice table was uncovered by the robotic arm in the center and edge of a nearby polygon at depths of 5 to 18 centimeters. In late summer, snowfall and frost blanketed the surface at night; H(2)O ice...

The Couonino Forest Experiment Station near Flagstbff, Ariz

The largest pine forest on the North American Continent estends from north-central Arizona in a southeasterly direction into southwestern New Mexico, a distance of approsiinately 250 miles The forest occupies an extensive plateau, known as the Colorado Plateau, which has a general elevation of from 6,000 to 8,000 feet above sea level, with numerous peaks the highest of which reaches an altitude...

Moral Analysis of a Procedure at Phoenix Hospital