Record Details
Observations of a deep-mixing event in Crater Lake, Oregon
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Observations of a deep-mixing event in Crater Lake, Oregon |
| Names |
Crawford, G. B.
(creator) Collier, Robert W. (creator) |
| Date Issued | 1997 (iso8601) |
| Abstract | We present observations of the evolution of a deep-mixing event in a deep, temperate lake. The observations were obtained from thermistors mounted on a long-term mooring in the lake. The event seems to have originated near 150-m depth and resulted in a plume or layer of cold water from the upper half of the lake that descended to the lake bottom (590 m) over a 3-d period. Net mixing associated with this event resulted in an overall vertical heat exchange of nearly lO 15 J and a volume exchange of 0.7–3.2 km 3 (4–18% of the lake volume) between the upper and lower portions of the lake. The deep water displaced during the event is estimated to have carried 0.3–2.5 X l0 6 mol of nitrate to the upper lake, which accounts for a significant portion of the average annual nitrate flux (-2-4 X 10 6 mol yr-1) thought to be upwelled in this highly oligotrophic system. |
| Genre | Article |
| Identifier | Crawford, G.B., and R.W. Collier. 1997. Observations of a deep-mixing event in Crater Lake, Oregon. Limnol. Oceanogr., 42(2), 299-306. |
