As
part of the Bering Strait project funded by
NSF-AON (Arctic Observing Network), in
September 2022 a team of US scientists
undertook a ~ 11 day cruise in the Bering
Strait and southern Chukchi Sea region on the
US vessel Norseman II, operated by Support
Vessels of Alaska, Inc..
The primary goals of the expedition were:
1) recovery of 3 moorings carrying physical
oceanographic (Woodgate & Peralta Ferriz)
and whale acoustic (Stafford) instrumentation.
These moorings were deployed in the Bering
Strait region in 2021 from the Norseman II.
The funding for the physical oceanographic
components of these moorings comes from
NSF-AON.
2) deployment of 3 moorings in the Bering
Strait region, carrying physical and
biogeochemical oceanographic (Woodgate &
Peralta-Ferriz) and whale acoustic (Stafford)
instrumentation. The funding for the physical
and biogeochemical oceanographic components of
these moorings comes from NSF-AON.
3) a set of CTD sections studying water
properties in the region, with some sampling
for nutrients and salinities (Woodgate &
Peralta-Ferriz),
4) collection of trace metal/nutrient water
samples using a pumped system at selected CTD
casts (Jensen)
5) collection of accompanying ship’s underway
data, viz. surface water temperature and
salinity, ADCP velocity data and
meteorological data (Woodgate &
Peralta-Ferriz),
6) underway marine mammal survey (Stafford
& Laidre).
The cruise loaded and offloaded gear and
people in Nome, Alaska.
Key Statistics:
- 2 moorings recovered,
- 3 moorings deployed,
- 111 CTD casts on 4 CTD lines, with 169
nutrient samples and 20 salinity samples
- trace metal/nutrient water samples
taken on 35 stations
For full details, and preliminary results,
see:
|
Ship-track, blue. Mooring sites, black.
CTD stations, without (red) and with (cyan) salinity or (green)
nutrient
and (except 3 stations mid D line) trace
metal/nutrient sampling, Consecutively numbered
arrows show direction of travel (on this figure,
green marking CTDing lines, cyan marking transit).
Depth contours every 10m from IBCAO (International
Bathymetric Chart of the Arctic Ocean [Jakobsson et
al., 2000]. Lower panels give detail of strait
region at the start (left) and end (right) of the
cruise. |
