Shipboard Conductivity–Temperature–Depth (CTD) and dissolved oxygen profile data collected during hypoxia surveys along six hydrographic sampling lines within Olympic Coast National Marine Sanctuary, 2004–2015

This data set includes Conductivity-Temperature-Depth (CTD) and dissolved oxygen profile data that were collected along Washington State’s outer coast within Olympic Coast National Marine Sanctuary (OCNMS). Measurements were made along six cross-shelf hydrographic sampling lines during a series of hypoxia survey cruises from 2004 – 2015. The 398 CTD profiles were acquired using Sea-Bird Scientific 19 SeaCAT or 19plus SeaCAT CTD profilers with associated SBE-43 (Sea-Bird Electronics) or Beckman or YSI-type (Yellow Springs Instruments) dissolved oxygen sensors. The data were processed via Sea-Bird Scientific’s SBE Data Processing application using six of the modules in the following order: Data Conversion, Filter, Align CTD, Loop Edit, Derive, and Bin Average. These processing steps and associated methods are the same as those used to process CTD data collected during OCNMS mooring maintenance cruises (Risien et al., 2024) and along the Newport Hydrographic Line (Risien et al., 2022) located off the central Oregon coast.

Station Name   
Latitude
Longitude
Water Depth (m, MLLW)

Cape Alava (CA)

CA010
48.1661oN
124.7540oW
10

CA020
48.1661oN
124.7598oW
20

CA030
48.1659oN
124.7783oW
30

CA040
48.1659oN
124.7852oW
40

CA045
48.1659oN
124.8335oW
45

CA050
48.1658oN
124.8578oW
50

CA060
48.1659oN
124.8843oW
60

CA070
48.1655oN
124.9011oW
70

CA080
48.1657oN
124.9141oW
80

CA090
48.1659oN
124.9247oW
90

CA100
48.1658oN
124.9319oW
100

Teahwhit Head (TH)

TH030
47.8759oN
124.6481oW
30

TH035
47.8761oN
124.7024oW
35

TH040
47.8760oN
124.7281oW
40

TH050
47.8761oN
124.7567oW
50

TH060
47.8765oN
124.7822oW
60

TH070
47.8765oN
124.8084oW
70

TH080
47.8768oN
124.8415oW
80

TH090
47.8769oN
124.8868oW
90

TH100
47.8769oN
124.9182oW
100

Hoh Head (HH)

HH025
47.7688oN
124.5605oW
25

HH042
47.7688oN
124.6428oW
42

HH065
47.7688oN
124.7401oW
65

Raft River (RR)

RR015
47.4632oN
124.3748oW
15

RR020
47.4644oN
124.4510oW
20

RR042
47.4632oN
124.5199oW
42

RR065
47.4629oN
124.6074oW
65

Cape Elizabeth (CE)

CE010
47.3541oN
124.3347oW
10

CE020
47.354oN
124.3608oW
20

CE030
47.3538oN
124.3913oW
30

CE040
47.3534oN
124.4678oW
40

CE050
47.3532oN
124.5064oW
50

CE060
47.3529oN
124.5510oW
60

CE070
47.3528oN
124.5823oW
70

CE080
47.3527oN
124.6158oW
80

CE090
47.3526oN
124.6491oW
90

CE100
47.3522oN
124.6754oW
100

Moclips (MO)

MO010
47.2214oN
124.2394oW
10

MO015
47.2214oN
124.2599oW
15

MO020
47.2214oN
124.2791oW
20

MO030
47.2195oN
124.3347oW
30

MO042
47.2195oN
124.3958oW
42