2002 NPEO Aircraft CTD Survey

 


The 2002 hydrographic survey consisted of eleven stations, casts 1 through 9 called "Helo-casts" using the lightweight winch and casts 10 and 11 called "Hydro-casts" using the Twin Otter skiplane to include water sampling for chemistry at remote distances.

The nine helo-casts are marked in dark red for Helo-0 through Helo-8. The two hydro-casts are marked in purple for Hydro-0 and Hydro-1. Click on the colored symbol to view the temperature and salinity profiles in a separate window.

Casts 2 through 8 (Helo-1 through Helo-7) were made from the helicopter to measure a CTD transect across the Lomonosov Ridge, on two separate days. Cast 1(Helo-0) and cast 9 (Helo-8) were made at camp Borneo.

A separate analysis of the Dissolved Oxygen record has been undertaken by Dr. Kelly Falkner of Oregon State University.

 

Vertical color
contour sections

of Salinity and
Temperature

across the
Lomonosov Ridge
from CTD stations
Helo-1 through
Helo-5
are
available.

2002 CTD Cast
Station/Location
CTD Position
Cast Date & Time
Helo-0 Borneo 88° 32.4'N_87° 53.6' E
4/23/2002 _ 1015 UTC
Helo-1 88° 20.7' N _113° 3.0' E
4/23/2002 _ 1334 UTC
Helo-2 88° 19.4' N _ 123° 21.0' E
4/23/2002 _ 1432 UTC
Helo-3 88° 18.5' N _ 131° 59.0' E
4/23/2002 _ 1530 UTC
Helo-4 88° 16.3' N _ 140° 51.7' E
4/23/2002 _ 1626 UTC
Helo-5 87° 55.3' N _ 153° 50.9' E
4/26/2002 _ 1204 UTC
Helo-6 88° 6.2' N _ 148° 5.5' E
4/26/2002 _ 1259UTC
Helo-7 88° 21.1' N _ 118° 23.7' E
4/26/2002 _ 1406 UTC
Helo-8 Borneo 88° 30.1' N _ 71° 14.1' E
4/28/2002 _ 1041UTC
Hydro-0 85° 10.7' N _ 165° 16.4' E
4/27/2002 _ 1433 UTC
Hydro-1 86° 37.1' N _ 164° 59.5' E
4/27/2002 _ 1850 UTC
The Historical Trend in North Pole Hydrography shows the changes in salinity and temperature profiles at the North Pole since 1950 and through the 1990s.