Untitled Document

1990

Cruise Description

The initial research trip of the CRETM-LMER was a 33 day cruise that took place in the autumn, the low-flow period for the Columbia River. Sixteen 30-hour sampling series were planned to represent a wide range of locations and timing in the tidal cycle.

Vessels

1990 was the first of 10 trips aboard the R/V Robert Gordon Sproul, a research vessel from Scripps Oceanographic Institute in San Diego, CA. Our sedimentological, geochemical, microbial and ecological investigations were based on the Sproul.

Geophysical investigations in 1990 were conducted from the M/V Snowgoose.

Coding explanation for sampling series:

Letter Code: U upstream; D downstream; N neap tide; S spring tide
First Digit: Tidal Series
Second Digit: Sequence in Tidal Series

Example: U11 refers to the first sequence in the first upstream tidal series.

Sampling Series
Sampling Series Locations
Dates

U11
River Mile 52 9/21/1990 - 9/22/1990

D11
River Mile 10-12 9/24/1990 - 9/25/1990

N11
Mid-Estuary, Buoy 39 9/26/1990 - 9/27/1990

N12
Mid-Estuary, Tongue Point 9/27/1990 - 9/28/1990

N13
Rice Island, South Pile Marker 9/29/1990 - 9/30/1990

S11
Mid-Estuary, Buoy 39 10/3/1990 - 10/4/1990

S12
Mid-Estuary, Buoy 39 10/5/1990 - 10/6/1990

S13
Mid-Estuary, Buoy 39 10/6/1990 - 10/7/1990

S14
Between Buoys 44 and 50 10/8/1990 - 10/9/1990

N21
Mid-Estuary, Buoy 43 10/11/1990 - 10/12/1990

N22
Between Buoys 44 and 50 10/12/1990 - 10/13/1990

N23
Mid-Estuary, Buoy 43 10/14/1990 - 10/15/1990

S21
Mid-Estuary, Buoy 39 10/17/1990 - 10/18/1990

S22
Mid-Estuary, Buoy 39 10/18/1990 - 10/19/1990

S23
Mid-Estuary, Buoy 37 10/20/1990 - 10/21/1990

U21
River Mile 53, Beaver Dock 10/22/1990 - 10/23/1990

Cruise Description The initial research trip of the CRETM-LMER was a 33 day cruise that took place in the autumn, the low-flow period for the Columbia River. Sixteen 30-hour sampling series were planned to represent a wide range of locations and timing in the tidal cycle.
Vessels 1990 was the first of 10 trips aboard the R/V Robert Gordon Sproul, a research vessel from Scripps Oceanographic Institute in San Diego, CA. Our sedimentological, geochemical, microbial and ecological investigations were based on the Sproul. Geophysical investigations in 1990 were conducted from the M/V Snowgoose.
Coding explanation for sampling series: Letter Code: U upstream; D downstream; N neap tide; S spring tide First Digit: Tidal Series Second Digit: Sequence in Tidal Series Example: U11 refers to the first sequence in the first upstream tidal series.



Sampling Series	Sampling Series Locations	Dates
U11	River Mile 52	9/21/1990 - 9/22/1990
D11	River Mile 10-12	9/24/1990 - 9/25/1990
N11	Mid-Estuary, Buoy 39	9/26/1990 - 9/27/1990
N12	Mid-Estuary, Tongue Point	9/27/1990 - 9/28/1990
N13	Rice Island, South Pile Marker	9/29/1990 - 9/30/1990
S11	Mid-Estuary, Buoy 39	10/3/1990 - 10/4/1990
S12	Mid-Estuary, Buoy 39	10/5/1990 - 10/6/1990
S13	Mid-Estuary, Buoy 39	10/6/1990 - 10/7/1990
S14	Between Buoys 44 and 50	10/8/1990 - 10/9/1990
N21	Mid-Estuary, Buoy 43	10/11/1990 - 10/12/1990
N22	Between Buoys 44 and 50	10/12/1990 - 10/13/1990
N23	Mid-Estuary, Buoy 43	10/14/1990 - 10/15/1990
S21	Mid-Estuary, Buoy 39	10/17/1990 - 10/18/1990
S22	Mid-Estuary, Buoy 39	10/18/1990 - 10/19/1990
S23	Mid-Estuary, Buoy 37	10/20/1990 - 10/21/1990
U21	River Mile 53, Beaver Dock	10/22/1990 - 10/23/1990