A new hydrological climatic proxy in arid lake sediments:Iodine‑uranium concentrations
Hydrological variation in the past ∼2 kyr is important for understanding the impact and driving forces of climate changes in the present and future, especially in arid areas. Sediment is one of the most useful archives in such a time period, and selection and validation of qualified hydrological pro...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/eebcf85f-4074-4b27-8244-dc843f525c59 https://doi.org/10.1016/j.palaeo.2023.111409 https://backend.orbit.dtu.dk/ws/files/306400719/1_s2.0_S0031018223000275_main.pdf |
id |
ftdtupubl:oai:pure.atira.dk:publications/eebcf85f-4074-4b27-8244-dc843f525c59 |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/eebcf85f-4074-4b27-8244-dc843f525c59 2023-06-11T04:12:44+02:00 A new hydrological climatic proxy in arid lake sediments:Iodine‑uranium concentrations Zhao, Xue Hou, Xiaolin Huang, Zhao Zhang, Chengjun Cheng, Peng 2023 application/pdf https://orbit.dtu.dk/en/publications/eebcf85f-4074-4b27-8244-dc843f525c59 https://doi.org/10.1016/j.palaeo.2023.111409 https://backend.orbit.dtu.dk/ws/files/306400719/1_s2.0_S0031018223000275_main.pdf eng eng info:eu-repo/semantics/openAccess Zhao , X , Hou , X , Huang , Z , Zhang , C & Cheng , P 2023 , ' A new hydrological climatic proxy in arid lake sediments : Iodine‑uranium concentrations ' , Palaeogeography, Palaeoclimatology, Palaeoecology , vol. 613 , 111409 . https://doi.org/10.1016/j.palaeo.2023.111409 Iodine Uranium Lake sediment Qaidam Basin Climate change /dk/atira/pure/sustainabledevelopmentgoals/reduced_inequalities SDG 10 - Reduced Inequalities /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action article 2023 ftdtupubl https://doi.org/10.1016/j.palaeo.2023.111409 2023-05-03T23:01:47Z Hydrological variation in the past ∼2 kyr is important for understanding the impact and driving forces of climate changes in the present and future, especially in arid areas. Sediment is one of the most useful archives in such a time period, and selection and validation of qualified hydrological proxies is the key point for reconstruction of hydrology in the past centuries. However, such research still faces a challenge due to limited knowledge of physiochemical implications of the traditional proxies in the specific lake, and difficulties to discriminate dry-wet from warm-cold signals. Here, a sediment core collected from Keluke Lake, Qaidam Basin, Northwest China was analyzed for iodine and uranium concentrations, to explore their potential as a new hydrological proxy in the arid regions for reconstructing the dry-wet changes during the past ∼2200 years. A significant correlation between iodine and uranium concentrations ( r = 0.62, P < 0.01) was observed in the sediment core, and four peak events of synchronously varied iodine and uranium concentrations occurred in the studied sediment core. This indicates similar physiochemical behaviors of the two elements from the catchment to the sediments via lake water. During drier periods, as vegetation degradation and soil organic substance content decreased, water-soluble iodine and uranium were intensively leached, and fine particle associated iodine and uranium were seriously eroded from catchment soils. Meanwhile, the suspended matter concentrations and organic substance content in lake water increased as well, which facilitated more iodine and uranium to be deposited and recorded in the sediment as peak events. The four dry events coincide with the reported climatic changes in other lake sediments, ice core and aeolian sediments, and also correspond with the society evolution in this area, including the establishment of Tuyuhun Kingdom (313–663 CE), Tubo Empire (618–842 CE), Mongolian tribes (1495–1591 CE, and the Han population immigration driven by a severe ... Article in Journal/Newspaper ice core Technical University of Denmark: DTU Orbit Palaeogeography, Palaeoclimatology, Palaeoecology 613 111409 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Iodine Uranium Lake sediment Qaidam Basin Climate change /dk/atira/pure/sustainabledevelopmentgoals/reduced_inequalities SDG 10 - Reduced Inequalities /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action |
spellingShingle |
Iodine Uranium Lake sediment Qaidam Basin Climate change /dk/atira/pure/sustainabledevelopmentgoals/reduced_inequalities SDG 10 - Reduced Inequalities /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action Zhao, Xue Hou, Xiaolin Huang, Zhao Zhang, Chengjun Cheng, Peng A new hydrological climatic proxy in arid lake sediments:Iodine‑uranium concentrations |
topic_facet |
Iodine Uranium Lake sediment Qaidam Basin Climate change /dk/atira/pure/sustainabledevelopmentgoals/reduced_inequalities SDG 10 - Reduced Inequalities /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action |
description |
Hydrological variation in the past ∼2 kyr is important for understanding the impact and driving forces of climate changes in the present and future, especially in arid areas. Sediment is one of the most useful archives in such a time period, and selection and validation of qualified hydrological proxies is the key point for reconstruction of hydrology in the past centuries. However, such research still faces a challenge due to limited knowledge of physiochemical implications of the traditional proxies in the specific lake, and difficulties to discriminate dry-wet from warm-cold signals. Here, a sediment core collected from Keluke Lake, Qaidam Basin, Northwest China was analyzed for iodine and uranium concentrations, to explore their potential as a new hydrological proxy in the arid regions for reconstructing the dry-wet changes during the past ∼2200 years. A significant correlation between iodine and uranium concentrations ( r = 0.62, P < 0.01) was observed in the sediment core, and four peak events of synchronously varied iodine and uranium concentrations occurred in the studied sediment core. This indicates similar physiochemical behaviors of the two elements from the catchment to the sediments via lake water. During drier periods, as vegetation degradation and soil organic substance content decreased, water-soluble iodine and uranium were intensively leached, and fine particle associated iodine and uranium were seriously eroded from catchment soils. Meanwhile, the suspended matter concentrations and organic substance content in lake water increased as well, which facilitated more iodine and uranium to be deposited and recorded in the sediment as peak events. The four dry events coincide with the reported climatic changes in other lake sediments, ice core and aeolian sediments, and also correspond with the society evolution in this area, including the establishment of Tuyuhun Kingdom (313–663 CE), Tubo Empire (618–842 CE), Mongolian tribes (1495–1591 CE, and the Han population immigration driven by a severe ... |
format |
Article in Journal/Newspaper |
author |
Zhao, Xue Hou, Xiaolin Huang, Zhao Zhang, Chengjun Cheng, Peng |
author_facet |
Zhao, Xue Hou, Xiaolin Huang, Zhao Zhang, Chengjun Cheng, Peng |
author_sort |
Zhao, Xue |
title |
A new hydrological climatic proxy in arid lake sediments:Iodine‑uranium concentrations |
title_short |
A new hydrological climatic proxy in arid lake sediments:Iodine‑uranium concentrations |
title_full |
A new hydrological climatic proxy in arid lake sediments:Iodine‑uranium concentrations |
title_fullStr |
A new hydrological climatic proxy in arid lake sediments:Iodine‑uranium concentrations |
title_full_unstemmed |
A new hydrological climatic proxy in arid lake sediments:Iodine‑uranium concentrations |
title_sort |
new hydrological climatic proxy in arid lake sediments:iodine‑uranium concentrations |
publishDate |
2023 |
url |
https://orbit.dtu.dk/en/publications/eebcf85f-4074-4b27-8244-dc843f525c59 https://doi.org/10.1016/j.palaeo.2023.111409 https://backend.orbit.dtu.dk/ws/files/306400719/1_s2.0_S0031018223000275_main.pdf |
genre |
ice core |
genre_facet |
ice core |
op_source |
Zhao , X , Hou , X , Huang , Z , Zhang , C & Cheng , P 2023 , ' A new hydrological climatic proxy in arid lake sediments : Iodine‑uranium concentrations ' , Palaeogeography, Palaeoclimatology, Palaeoecology , vol. 613 , 111409 . https://doi.org/10.1016/j.palaeo.2023.111409 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.palaeo.2023.111409 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
613 |
container_start_page |
111409 |
_version_ |
1768388773541838848 |