This is interesting, the total amount of fine dust released by Deep Impact is enough to cover a the Penn State football field about 9 meters deep, but the crater is about (by some estimates) ten times the surface area of a football field. This means the dust constitutes about one meter of whatever the depth of the crater is.

We don't know what the depth of the crater actually is, but you can be sure it is much more than one meter. So what's the rest of the excavated material? I'm curious to see a quantatative measurement of the Hydroxyl Ions observed so as to get an estimate of the ice that was vaporized, or released and sublimated in the sunlight.

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