Spatiotemporal Variations of Riverine Discharge Within the Amazon Basin During the Late Holocene Coincide With Extratropical Temperature Anomalies

D. J. Bertassoli; A. O. Sawakuchi; C. M. Chiessi; E. Schefuß; G. A. Hartmann; C. Häggi; F. W. Cruz; M. Zabel; M. M. McGlue; R. A. Santos; F. N. Pupim

doi:10.1029/2019GL082936

Spatiotemporal Variations of Riverine Discharge Within the Amazon Basin During the Late Holocene Coincide With Extratropical Temperature Anomalies

D. J. Bertassoli, A. O. Sawakuchi, C. M. Chiessi, E. Schefuß, G. A. Hartmann, C. Häggi, F. W. Cruz, M. Zabel, M. M. McGlue, R. A. Santos, F. N. Pupim

Earth and Environmental Sciences

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Late Holocene hydroclimate variations have been extensively recognized in Amazonia, but the effects of such changes on riverine discharge within the Amazon lowlands are still poorly understood. We investigated a sediment core covering circa 4,000 to 300 cal yr BP collected in the lower valley of the Xingu River (Xingu Ria) in an area under the influence of the Amazon River. Our results indicate a decrease in precipitation in the Amazon lowlands throughout the studied period and reduced input of coarser and potassium-rich Amazon River sediments to the confluence from about 2,600 to 1,400 cal yr BP. We suggest that lower temperatures in the extratropical Southern Hemisphere weakened the South American Summer Monsoon and led to a decrease in the water discharge of the Amazon River during this period.

Original language	English
Pages (from-to)	9013-9022
Number of pages	10
Journal	Geophysical Research Letters
Volume	46
Issue number	15
DOIs	https://doi.org/10.1029/2019GL082936
State	Published - Aug 16 2019

Bibliographical note

Funding Information:
The authors acknowledge funding through the São Paulo Research Foundation (FAPESP, grants 2017/50085-3, 2014/23334-4, 2016/11141-2, 2016/02656-9, and 2017/25735-4); the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES, grants AUXPE 1976/2014, 2043/2014, and 564/2015); and the National Council for Scientific and Technological Development (CNPq, grants 454609/2014-0, 302607/2016-1, 422255/2016-5, 306527/2017-0, and 302411/2018-6). This work was supported through the DFG Research Center/Cluster of Excellence The Ocean in the Earth System. We thank the Paleomagnetism Laboratory (USPMag) of the University of São Paulo (Brazil). We acknowledge Ralph Kreutz for laboratory support, Daniel Atencio for providing the XRF equipment, and Mauricio Parra, Tatiana Pereira and Leandro Souza for helping during the field surveys. All data presented in this study are permanently archived on the Pangaea data repository (www.pangaea.de). The authors declare no conflict of interest.

Funding Information:
The authors acknowledge funding through the São Paulo Research Foundation (FAPESP, grants 2017/50085‐3, 2014/23334‐4, 2016/11141‐2, 2016/02656‐9, and 2017/25735‐4); the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES, grants AUXPE 1976/2014, 2043/2014, and 564/2015); and the National Council for Scientific and Technological Development (CNPq, grants 454609/2014‐0, 302607/2016‐1, 422255/2016‐5, 306527/2017‐0, and 302411/2018‐6). This work was supported through the DFG Research Center/Cluster of Excellence . We thank the Paleomagnetism Laboratory (USPMag) of the University of São Paulo (Brazil). We acknowledge Ralph Kreutz for laboratory support, Daniel Atencio for providing the XRF equipment, and Mauricio Parra, Tatiana Pereira and Leandro Souza for helping during the field surveys. All data presented in this study are permanently archived on the Pangaea data repository ( www.pangaea.de ). The authors declare no conflict of interest. The Ocean in the Earth System

Publisher Copyright:
©2019. American Geophysical Union. All Rights Reserved.

Keywords

Amazon
Amazonia
Holocene
SASM
late Holocene
paleoclimate

ASJC Scopus subject areas

Geophysics
Earth and Planetary Sciences (all)

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10.1029/2019GL082936

Cite this

Bertassoli, D. J., Sawakuchi, A. O., Chiessi, C. M., Schefuß, E., Hartmann, G. A., Häggi, C., Cruz, F. W., Zabel, M., McGlue, M. M., Santos, R. A., & Pupim, F. N. (2019). Spatiotemporal Variations of Riverine Discharge Within the Amazon Basin During the Late Holocene Coincide With Extratropical Temperature Anomalies. Geophysical Research Letters, 46(15), 9013-9022. https://doi.org/10.1029/2019GL082936

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title = "Spatiotemporal Variations of Riverine Discharge Within the Amazon Basin During the Late Holocene Coincide With Extratropical Temperature Anomalies",

abstract = "Late Holocene hydroclimate variations have been extensively recognized in Amazonia, but the effects of such changes on riverine discharge within the Amazon lowlands are still poorly understood. We investigated a sediment core covering circa 4,000 to 300 cal yr BP collected in the lower valley of the Xingu River (Xingu Ria) in an area under the influence of the Amazon River. Our results indicate a decrease in precipitation in the Amazon lowlands throughout the studied period and reduced input of coarser and potassium-rich Amazon River sediments to the confluence from about 2,600 to 1,400 cal yr BP. We suggest that lower temperatures in the extratropical Southern Hemisphere weakened the South American Summer Monsoon and led to a decrease in the water discharge of the Amazon River during this period.",

keywords = "Amazon, Amazonia, Holocene, SASM, late Holocene, paleoclimate",

author = "Bertassoli, {D. J.} and Sawakuchi, {A. O.} and Chiessi, {C. M.} and E. Schefu{\ss} and Hartmann, {G. A.} and C. H{\"a}ggi and Cruz, {F. W.} and M. Zabel and McGlue, {M. M.} and Santos, {R. A.} and Pupim, {F. N.}",

note = "Funding Information: The authors acknowledge funding through the S{\~a}o Paulo Research Foundation (FAPESP, grants 2017/50085-3, 2014/23334-4, 2016/11141-2, 2016/02656-9, and 2017/25735-4); the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES, grants AUXPE 1976/2014, 2043/2014, and 564/2015); and the National Council for Scientific and Technological Development (CNPq, grants 454609/2014-0, 302607/2016-1, 422255/2016-5, 306527/2017-0, and 302411/2018-6). This work was supported through the DFG Research Center/Cluster of Excellence The Ocean in the Earth System. We thank the Paleomagnetism Laboratory (USPMag) of the University of S{\~a}o Paulo (Brazil). We acknowledge Ralph Kreutz for laboratory support, Daniel Atencio for providing the XRF equipment, and Mauricio Parra, Tatiana Pereira and Leandro Souza for helping during the field surveys. All data presented in this study are permanently archived on the Pangaea data repository (www.pangaea.de). The authors declare no conflict of interest. Funding Information: The authors acknowledge funding through the S{\~a}o Paulo Research Foundation (FAPESP, grants 2017/50085‐3, 2014/23334‐4, 2016/11141‐2, 2016/02656‐9, and 2017/25735‐4); the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES, grants AUXPE 1976/2014, 2043/2014, and 564/2015); and the National Council for Scientific and Technological Development (CNPq, grants 454609/2014‐0, 302607/2016‐1, 422255/2016‐5, 306527/2017‐0, and 302411/2018‐6). This work was supported through the DFG Research Center/Cluster of Excellence . We thank the Paleomagnetism Laboratory (USPMag) of the University of S{\~a}o Paulo (Brazil). We acknowledge Ralph Kreutz for laboratory support, Daniel Atencio for providing the XRF equipment, and Mauricio Parra, Tatiana Pereira and Leandro Souza for helping during the field surveys. All data presented in this study are permanently archived on the Pangaea data repository ( www.pangaea.de ). The authors declare no conflict of interest. The Ocean in the Earth System Publisher Copyright: {\textcopyright}2019. American Geophysical Union. All Rights Reserved.",

year = "2019",

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doi = "10.1029/2019GL082936",

language = "English",

volume = "46",

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Bertassoli, DJ, Sawakuchi, AO, Chiessi, CM, Schefuß, E, Hartmann, GA, Häggi, C, Cruz, FW, Zabel, M, McGlue, MM, Santos, RA & Pupim, FN 2019, 'Spatiotemporal Variations of Riverine Discharge Within the Amazon Basin During the Late Holocene Coincide With Extratropical Temperature Anomalies', Geophysical Research Letters, vol. 46, no. 15, pp. 9013-9022. https://doi.org/10.1029/2019GL082936

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T1 - Spatiotemporal Variations of Riverine Discharge Within the Amazon Basin During the Late Holocene Coincide With Extratropical Temperature Anomalies

AU - Bertassoli, D. J.

AU - Sawakuchi, A. O.

AU - Chiessi, C. M.

AU - Schefuß, E.

AU - Hartmann, G. A.

AU - Häggi, C.

AU - Cruz, F. W.

AU - Zabel, M.

AU - McGlue, M. M.

AU - Santos, R. A.

AU - Pupim, F. N.

N1 - Funding Information: The authors acknowledge funding through the São Paulo Research Foundation (FAPESP, grants 2017/50085-3, 2014/23334-4, 2016/11141-2, 2016/02656-9, and 2017/25735-4); the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES, grants AUXPE 1976/2014, 2043/2014, and 564/2015); and the National Council for Scientific and Technological Development (CNPq, grants 454609/2014-0, 302607/2016-1, 422255/2016-5, 306527/2017-0, and 302411/2018-6). This work was supported through the DFG Research Center/Cluster of Excellence The Ocean in the Earth System. We thank the Paleomagnetism Laboratory (USPMag) of the University of São Paulo (Brazil). We acknowledge Ralph Kreutz for laboratory support, Daniel Atencio for providing the XRF equipment, and Mauricio Parra, Tatiana Pereira and Leandro Souza for helping during the field surveys. All data presented in this study are permanently archived on the Pangaea data repository (www.pangaea.de). The authors declare no conflict of interest. Funding Information: The authors acknowledge funding through the São Paulo Research Foundation (FAPESP, grants 2017/50085‐3, 2014/23334‐4, 2016/11141‐2, 2016/02656‐9, and 2017/25735‐4); the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES, grants AUXPE 1976/2014, 2043/2014, and 564/2015); and the National Council for Scientific and Technological Development (CNPq, grants 454609/2014‐0, 302607/2016‐1, 422255/2016‐5, 306527/2017‐0, and 302411/2018‐6). This work was supported through the DFG Research Center/Cluster of Excellence . We thank the Paleomagnetism Laboratory (USPMag) of the University of São Paulo (Brazil). We acknowledge Ralph Kreutz for laboratory support, Daniel Atencio for providing the XRF equipment, and Mauricio Parra, Tatiana Pereira and Leandro Souza for helping during the field surveys. All data presented in this study are permanently archived on the Pangaea data repository ( www.pangaea.de ). The authors declare no conflict of interest. The Ocean in the Earth System Publisher Copyright: ©2019. American Geophysical Union. All Rights Reserved.

PY - 2019/8/16

Y1 - 2019/8/16

N2 - Late Holocene hydroclimate variations have been extensively recognized in Amazonia, but the effects of such changes on riverine discharge within the Amazon lowlands are still poorly understood. We investigated a sediment core covering circa 4,000 to 300 cal yr BP collected in the lower valley of the Xingu River (Xingu Ria) in an area under the influence of the Amazon River. Our results indicate a decrease in precipitation in the Amazon lowlands throughout the studied period and reduced input of coarser and potassium-rich Amazon River sediments to the confluence from about 2,600 to 1,400 cal yr BP. We suggest that lower temperatures in the extratropical Southern Hemisphere weakened the South American Summer Monsoon and led to a decrease in the water discharge of the Amazon River during this period.

AB - Late Holocene hydroclimate variations have been extensively recognized in Amazonia, but the effects of such changes on riverine discharge within the Amazon lowlands are still poorly understood. We investigated a sediment core covering circa 4,000 to 300 cal yr BP collected in the lower valley of the Xingu River (Xingu Ria) in an area under the influence of the Amazon River. Our results indicate a decrease in precipitation in the Amazon lowlands throughout the studied period and reduced input of coarser and potassium-rich Amazon River sediments to the confluence from about 2,600 to 1,400 cal yr BP. We suggest that lower temperatures in the extratropical Southern Hemisphere weakened the South American Summer Monsoon and led to a decrease in the water discharge of the Amazon River during this period.

KW - Amazon

KW - Amazonia

KW - Holocene

KW - SASM

KW - late Holocene

KW - paleoclimate

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ER -

Spatiotemporal Variations of Riverine Discharge Within the Amazon Basin During the Late Holocene Coincide With Extratropical Temperature Anomalies

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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