The evolution of 17O-excess in surface water of the arid environment during recharge and evaporation
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| Title: | Main Title: The evolution of 17O-excess in surface water of the arid environment during recharge and evaporation |
| Description: | Abstract: This study demonstrates the potential of triple O-isotopes to quantify evaporation with recharge on a salt lake from the Atacama Desert, Chile. An evaporative gradient was found in shallow ponds along a subsurface flow-path from a groundwater source. Total dissolved solids (TDS) increased by 177 g/l along with an increase in δ18O by 16.2‰ and in δD by 65‰. 17O-excess decreased by 79 per meg, d-excess by 55‰. Relative humidity (h), evaporation over inflow (E/I), the isotopic composition of vapor (*RV) and of inflowing water (*RWI) determine the isotope distribution in 17O-excess over δ18O along a well-defined evaporation curve as the classic Craig-Gordon model predicts. A complementary on-site simple (pan) evaporation experiment over a change in TDS, δ18O, and 17O-excess by 392 g/l, 25.0‰, and −130 per meg, respectively, was used to determine the effects of sluggish brine evaporation and of wind turbulence. These effects translate to uncertainty in E/I rather than h. The local composition of *RV relative to *RWI pre-determines the general ability to resolve changes in h. The triple O-isotope system is useful for quantitative hydrological balancing of lakes and for paleo-humidity reconstruction, particularly if complemented by D/H analysis. |
| Identifier: | 10.1038/s41598-018-23151-6 (DOI) |
Responsible Party
| Creators: | Jakub Surma (Author), Sergey Assonov (Author), Daniel Herwartz (Author), Claudia Voigt (Author), Michael Staubwasser (Author) |
| Publisher: | Springer Nature |
| Publication Year: | 2018 |
Topic
| CRC1211 Topic: | Climate |
| Related Subproject: | D3 |
| Subjects: | Keywords: Stable Isotope Geochemistry, Paleoclimate Proxies |
| Geogr. Information Topic: | Inland Waters |
File Details
| Filename: | Surma_et_al_2018.pdf |
| Data Type: | Text - Article |
| File Size: | 1.5 MB |
| Date: | Issued: 21.03.2018 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
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| Download Permission: | Only Project Members |
| General Access and Use Conditions: | According to the CRC1211DB data policy agreement. |
| Access Limitations: | According to the CRC1211DB data policy agreement. |
| Licence: | [CRC1211DB] Data policy agreement |
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Specific Information - Publication
| Publication Status: | Published |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Scientific Reports |
| Issue: | 4972 |
| Volume: | 8 |
| Number of Pages: | 10 (1 - 10) |
Metadata Details
| Metadata Creator: | Claudia Voigt |
| Metadata Created: | 29.03.2018 |
| Metadata Last Updated: | 29.03.2018 |
| Subproject: | D3 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 745 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 3 |
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