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Article: δ(13)C-δ(18)O covariance: an effective indicator of hydrological closure for lakes?
Title | δ(13)C-δ(18)O covariance: an effective indicator of hydrological closure for lakes? |
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Authors | |
Keywords | Carbonates δ13 C-δ18 O covariance Hydrological closure Climatic pattern |
Issue Date | 2008 |
Publisher | Wiley-Blackwell Publishing Asia. |
Citation | Acta Geologica Sinica, 2008, v. 82 n. 5, p. 975-981 How to Cite? |
Abstract | The correlation between the δ13 C and δ18 0 in primary carbonates is affected by several factors such as hydrological balance, total CO2 concentrations, climatic condition and lake productivity. The influence of these factors on the δ13 C-δ18 0 correlation may be different on different time scales. In this paper, two different-type lakes in southwestern China, Lake Erhai and Lake Chenghai, are selected to investigate the influence of climatic pattern on the δ13 C-δ18 0 correlation and to evaluate the reliability of the δ13 C-δ18 0 covariance as an indicator of hydrological closure. The results show that there exists good correlation between the δ13 C and δ18 0 in Lake Erhai (overflowing open lake) and in Lake Chenghai (closed lake). This suggests that the δ13 C-δ18 0 covariance may be not an effective indicator of hydrological closure for lakes, especially on short time scales. On the one hand, a hydrologically open lake may display covariant δ13 C and δ18 0 as a result of climatic influence. The particular alternate warm-dry and cold-wet climatic pattern in southwestern China may be the principal cause of the δ13 C-δ18 0 covariance in Lake Erhai and Lake Chenghai. On the other hand, a hydrologically closed lake unnecessarily displays covariant trends between δ13 C and δ18 O because of the buffering effect of high CO2 concentration on the δ13 C shift in hyper-alkaline lakes. We should be prudent when we use the covariance between δ13 C and δ18 O to judge the hydrological closure of lake. |
Persistent Identifier | http://hdl.handle.net/10722/125607 |
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 0.505 |
DC Field | Value | Language |
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dc.contributor.author | Chen, J | en_HK |
dc.contributor.author | Wang, F | en_HK |
dc.contributor.author | Wan, G | en_HK |
dc.contributor.author | Tang, D | en_HK |
dc.contributor.author | Zhang, DD | en_HK |
dc.contributor.author | Huang, R | en_HK |
dc.contributor.author | Li, J | en_HK |
dc.contributor.author | Xiao, T | en_HK |
dc.date.accessioned | 2010-10-31T11:41:06Z | - |
dc.date.available | 2010-10-31T11:41:06Z | - |
dc.date.issued | 2008 | en_HK |
dc.identifier.citation | Acta Geologica Sinica, 2008, v. 82 n. 5, p. 975-981 | en_HK |
dc.identifier.issn | 1000-9515 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/125607 | - |
dc.description.abstract | The correlation between the δ13 C and δ18 0 in primary carbonates is affected by several factors such as hydrological balance, total CO2 concentrations, climatic condition and lake productivity. The influence of these factors on the δ13 C-δ18 0 correlation may be different on different time scales. In this paper, two different-type lakes in southwestern China, Lake Erhai and Lake Chenghai, are selected to investigate the influence of climatic pattern on the δ13 C-δ18 0 correlation and to evaluate the reliability of the δ13 C-δ18 0 covariance as an indicator of hydrological closure. The results show that there exists good correlation between the δ13 C and δ18 0 in Lake Erhai (overflowing open lake) and in Lake Chenghai (closed lake). This suggests that the δ13 C-δ18 0 covariance may be not an effective indicator of hydrological closure for lakes, especially on short time scales. On the one hand, a hydrologically open lake may display covariant δ13 C and δ18 0 as a result of climatic influence. The particular alternate warm-dry and cold-wet climatic pattern in southwestern China may be the principal cause of the δ13 C-δ18 0 covariance in Lake Erhai and Lake Chenghai. On the other hand, a hydrologically closed lake unnecessarily displays covariant trends between δ13 C and δ18 O because of the buffering effect of high CO2 concentration on the δ13 C shift in hyper-alkaline lakes. We should be prudent when we use the covariance between δ13 C and δ18 O to judge the hydrological closure of lake. | - |
dc.language | eng | en_HK |
dc.publisher | Wiley-Blackwell Publishing Asia. | en_HK |
dc.relation.ispartof | Acta Geologica Sinica | en_HK |
dc.rights | The definitive version is available at www3.interscience.wiley.com | - |
dc.subject | Carbonates | - |
dc.subject | δ13 C-δ18 O covariance | - |
dc.subject | Hydrological closure | - |
dc.subject | Climatic pattern | - |
dc.title | δ(13)C-δ(18)O covariance: an effective indicator of hydrological closure for lakes? | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Zhang, DD: zhangd@hkucc.hku.hk | en_HK |
dc.identifier.authority | Zhang, DD=rp00649 | en_HK |
dc.identifier.doi | 10.1111/j.1755-6724.2008.tb00653.x | - |
dc.identifier.hkuros | 175671 | en_HK |
dc.identifier.volume | 82 | en_HK |
dc.identifier.issue | 5 | en_HK |
dc.identifier.spage | 975 | en_HK |
dc.identifier.epage | 981 | en_HK |
dc.publisher.place | Australia | - |
dc.customcontrol.immutable | sml 130423 | - |
dc.identifier.issnl | 1000-9515 | - |