Particulate Th data from samples collected on 5 cruises at Station ALOHA off Hawaii and Station M off California from 2019 to 2020
Particulate Th data from samples collected on 5 cruises at Station ALOHA off Hawaii and Station M off California from 2019 to 2020
Date
2024-04-02
Authors
Drazen, Jeffrey C.
Benitez-Nelson, Claudia R.
Benitez-Nelson, Claudia R.
Linked Authors
Alternative Title
Citable URI
Date Created
2024-03-20
Location
California current, Station M (34º 50' N, 123º W) and North Pacific Subtropical Gyre, Station Aloha (22º 45' N, 158º W)
westlimit: -157.9; southlimit: 22.65; eastlimit: -123; northlimit: 35.14
westlimit: -157.9; southlimit: 22.65; eastlimit: -123; northlimit: 35.14
DOI
10.26008/1912/bco-dmo.922922.1
Related Materials
Replaces
Replaced By
Keywords
particle export
thorium-234
Carbon flux
thorium-234
Carbon flux
Abstract
The abyssal plains of the oceans cover roughly half of the earth's surface, host enormous reservoirs of biodiversity and mineral resources, and play important roles in nutrient regeneration and carbon sequestration. The most important process controlling the structure and function of these ecosystems is the quantity and quality of food (mostly sinking organic particles) that reaches the deep-sea floor. The goals of this research were to evaluate the relative importance of small and large particles that sink to the deep-sea using the naturally occurring short-lived radionuclide, 234Th. Particulate and dissolved samples were collected throughout the water column (12-17 depths) during 5 cruises in the productive waters off of California (Station M, May and October 2019) within the nutrient-poor central Pacific, north of Hawaii (Station ALOHA, July 2019 and January and July 2020). Total water column (2 L) and particulate 234Th activities collected using in situ pumps (53 um, 1 um, and 0.3 um) have been measured in all of the samples collected from the 5 cruises: April 2019, July 2019, October 2019, January 2020, and July 2020. This dataset includes the particulate Th measurements. Total Th is available in a separate, related dataset.
For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/922922
Description
Dataset: Particulate Th
Embargo Date
Citation
Drazen, J. C., & Benitez-Nelson, C. R. (2024). Particulate Th data from samples collected on 5 cruises at Station ALOHA off Hawaii and Station M off California from 2019 to 2020 (Version 1) [Data set]. Biological and Chemical Oceanography Data Management Office (BCO-DMO). https://doi.org/10.26008/1912/BCO-DMO.922922.1