Development of an autonomous, monthly and daily, rainfall sampler for isotope research

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dc.contributor.authorAnkor, MJen_AU
dc.contributor.authorTyler, JJen_AU
dc.contributor.authorHughes, CEen_AU
dc.date.accessioned2021-04-22T02:09:01Zen_AU
dc.date.available2021-04-22T02:09:01Zen_AU
dc.date.issued2019-08en_AU
dc.date.statistics2021-03-11en_AU
dc.description.abstractAn autonomous, low cost (<US$750), and open source rainfall sampler has been developed for hydrogen and oxygen isotope research, able to sample daily and monthly for up to 60 days of rainfall, over a three month period. The sampler is designed to use modern fabrication methods such as 3D printing and laser cutting to minimise the need for machined and injection molded components. The sampler can use either paraffin oil or a submerged inlet tube (also known as tube-dip-in samplers) to prevent evaporation, with the use of the inlet tube method facilitated by 3D printed bottle caps. An experiment was performed to identify the most suitable plastic for these caps, with acetone treated ABS (Acrylonitrile Butadiene Styrene) being most suitable, followed by PETG (Polyethylene Terephthalate Glycol), untreated ABS, and PLA (Polylactic acid). In addition, the effectiveness of both paraffin oil and the inlet tube method for preventing evaporation was quantified, with paraffin identified as being the most effective at present. During a 90 day outdoor experiment, the 18O/16O vs. 2H/1H ratios of some water samples evolved along a local evaporation line, with increased isotopic enrichment of samples correlating to water loss. A coupled hydrologic-isotopic model was applied to these data, and successfully predicted the change in isotope ratios based on the amount of water lost from each sample. This modelling approach, combined with daily and monthly sample collection and quantification of evaporation rates within the sheltered environment of the sampler allows for back calculation of the original volume and isotopic composition of daily and monthly rainfall samples. The rainfall sampler thus facilitates cost -and time- effective remote monitoring of the isotopic composition of precipitation to support an array of Earth system research. © 2019 Elsevier B.V.en_AU
dc.identifier.citationAnkor, M. J., Tyler, J. J., & Hughes, C. E. (2019). Development of an autonomous, monthly and daily, rainfall sampler for isotope research. Journal of Hydrology, 575, 31-41. doi:10.1016/j.jhydrol.2019.04.074en_AU
dc.identifier.issn0022-1694en_AU
dc.identifier.journaltitleJournal of Hydrologyen_AU
dc.identifier.pagination31-41en_AU
dc.identifier.urihttps://doi.org/10.1016/j.jhydrol.2019.04.074en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10690en_AU
dc.identifier.volume575en_AU
dc.language.isoenen_AU
dc.publisherElsevier B. V.en_AU
dc.subjectAtmospheric precipitationsen_AU
dc.subjectOxygen isotopesen_AU
dc.subjectHydrogen isotopesen_AU
dc.subject3D printingen_AU
dc.subjectRain wateren_AU
dc.subjectSimulationen_AU
dc.subjectEvaporationen_AU
dc.subjectSamplingen_AU
dc.titleDevelopment of an autonomous, monthly and daily, rainfall sampler for isotope researchen_AU
dc.typeJournal Articleen_AU
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