©2020 Biological and Chemical Oceanography Data Management Office.This project addresses carbon conversion processes in sandy beaches. To assess gas concentration gradients between the atmosphere and the beach sediment, vertical gas concentration profiles were measured below the beach sediment surface. Gas (custom probes) and temperature probes (PT100) were placed at 5 cm above the sediment and at 0, -5, -10, -15, -20, -25, -30, -35, -40, -45, -50 cm below the sediment surface. Pore gas was extracted from the sediment using a syringe pump (150 ml max. volume)....
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Study Site
The project used an exposed silicate sand beach on Santa Rosa Island near Pensacola Beach in the northeastern Gulf (30 20.917 N, 087 02.917 W). The sediment at this site is composed of quartz sand. Air temperature ranges from 6 to 39˚C and water temperature from 14 to 32˚C. Tidal range at this site is 0.6 m.
Measurements
Gas (custom probe, 70 cm long, 5 mm diameter) and temperature probes (PT100) were placed at 5 cm above the sediment and at 0, -5, -10, -15, -20, -25, -30, -35, -40, -45, -50 cm below the sediment surface. Pore gas was extracted from the sediment using a syringe pump (150 ml max. volume). After extraction of gas from the sediment, a set of stopcocks was used to switch the flow path of the syringe pump from the respective probe to a Pyroscience flow-through O2 optode installed in series with a Licor840A gas analyzer, where the CO2 concentrations were measured.
Huettel, M. (2025). Vertical gas concentrations in exposed silicate sand beach on Santa Rosa Island, FL measured on Jun 7th, 2024. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-11-14 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.986658.1 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.