Freeze Coring at Shannon Lake, June 2000

Shannon Lake

Sampling Crew Members - left to right: Sandra Rosenberg, Sharon (Tighe) Coslin, Lisa (Dreger) Wilson

Lisa: Crushing Dry Ice

Jeff Curtis adds methanol to create dry-ice slurry

Jeff pouring dry ice slurry into freeze corer tube

Working the dry ice slurry from funnel into freeze corer

Capping the freeze corer

Lowering the freeze corer into Shannon Lake

Jeff retreiving freeze corer from the lake bottom

Successful crew returning with freeze core

The Freeze Core

Lunch!!! Sharon and Sandra

Donna Francis, Lisa, Sharon & Jeff

Jeff removing ice plug from the core bottom

Pouring hot water into freeze corer to separate it from the frozen rind of sediment

Wrapping the rind of frozen sediment

Bottom portion of final freeze core

(right - fresh half-core planed to reveal undisturbed sediment structure)
(left - freeze-dried half-core, with laminations indicated at 5 year intervals)

EESC Coring Demonstration: May 2000

Ian with Kajak-Brinkhurst Core ready for extrusion

Preparing raft to take Livingstone core

Heading for home with truck load of gear