yes that was it..the Kraffts. here is what a search for them finds:
"Saw a TV documentary on volcanoes and pyroclastic flows a few months ago. Part of the program referred to a scientist who was killed when trying to photograph a pyroclastic flow as it was rushing down towards him...Maurice and Katya Krafft. They, and about 20 others were killed by a pyroclastic flow on Mt. Unzen in Japan." I did not realize that 20
other people lwere involved in teh same incident, too!

from a promo script for Nat'l Geographic Mountains fo fire:
http://www.jeffreyleehollis.com/mountains2copy.html

"The documentary National Geographic's Volcano was an hour-long National Geographic documentary relating the story of volcanologists Katya and Maurice Krafft as they pursue the study of active volcanic eruptions at numerous sites worldwide. '

interview with vulcanologist couple the Kraffts--published posthumously

Pele Dancing photo by Katya Krafft...for sale memorial benefit
the Kraffts produced an educational video about volcano risks..
anhd this stunning photo is for sale..the proceeds benefit educational efforts...at least copoies were available at one time...

http://www.swvrc.org/updates.htm

latest report says mt. st. helens had erupted..

see hereA:

http://www.swvrc.org/cerupt.htm