Abstract

This dataset contains short-lived radioisotope (SLRad) data collected aboard R/V Justo Sierra cruise JS-0815 in the southern Gulf of Mexico from 2015-07-31 to 2015-08-08. SLRad data were generated for selected core sub-samples at 2mm sampling intervals for “surficial unit” and 5mm sampling resolution intervals to the base of cores. SLRad data generated include sample activity as disintegrations per minute per gram (dpm/g) of 1) Excess Thorium-234 (234Thxs) activity, which is calculated by measuring the total Thorium-234 (234ThTot) activity and the subtraction of the measured or estimated “supported” Thorium-234 (234ThSup) activity, 2) Excess Lead-210 (210Pbxs) activity, which is calculated by measuring the total Lead-210 (210PbTot) activity and subtraction of the measured background "supported" Lead-210 (210PbSup) activity {average of Lead-214 (214Pb) at 295 kiloelectron volts (keV), 214Pb at 351keV, and Bismuth-214 (214Bi) at 609keV}, 3) Cesium-137 (137Cs) activity, and 4) Berilium-7 (7Be) activity. The cruise documentation was provided for the R/V Justo Sierra cruise JS-0815. The cruise was led by chief scientist Dr. David Hollander.

Comments

Data and metadata is made available by the Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC) through a CC0 license in compliance with the Gulf of Mexico Research Initiative (GoMRI). The original dataset landing pages may be accessed at GRIIDC’s dataset monitoring webpage.

Data users are encouraged to contact the originating investigator prior to data use and provide appropriate credit.

Purpose

Provide age control and sedimentation rates for sediment cores

Keywords

Sediment Core, Short-lived Radioisotopes, benthic, sediment analysis, geological, multicorer, Lead, Thorium, Caesium, Beryllium, Bismuth

UDI

R4.x267.000:0124

Date

2-19-2019 12:00 AM

Point of Contact

Brooks, Gregg
Eckerd College
College of Marine Science
Natural Sciences Collegium Sheen Science Center, SHA-102
St. Petersburg , FL 33711
USA
brooksgr@eckerd.edu

Funding Source

RFP-IV

Start of Data Collection

7-31-2015

End of Data Collection

8-8-2015

DOI

https://doi.org/10.7266/n7-jm62-5b12

Rights Information

Creative Commons License
This work is licensed under a Creative Commons Public Domain Dedication 1.0 License.

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