A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean

The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Bhadra, Sudhira R. [verfasserIn] Saraswat, Rajeev [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Indian monsoon Mid-pleistocene transition Planktic foraminifera Quaternary

Übergeordnetes Werk:	Enthalten in: Quaternary science reviews - Amsterdam [u.a.] : Elsevier, 1982, 295
Übergeordnetes Werk:	volume:295

DOI / URN:	10.1016/j.quascirev.2022.107761

Katalog-ID:	ELV059205016

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520			\|a The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon.
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author_variant	s r b sr srb r s rs
matchkey_str	article:02773791:2022----::srnifunefhmdlitcntastooteosoadsoitdr
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publishDate	2022
allfields	10.1016/j.quascirev.2022.107761 doi (DE-627)ELV059205016 (ELSEVIER)S0277-3791(22)00392-4 DE-627 ger DE-627 rda eng 550 VZ 38.15 bkl Bhadra, Sudhira R. verfasserin (orcid)0000-0003-2698-4047 aut A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon. Indian monsoon Mid-pleistocene transition Planktic foraminifera Quaternary Saraswat, Rajeev verfasserin aut Enthalten in Quaternary science reviews Amsterdam [u.a.] : Elsevier, 1982 295 Online-Ressource (DE-627)303614544 (DE-600)1495523-4 (DE-576)259484040 0277-3791 nnns volume:295 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.15 Historische Geologie: Allgemeines VZ AR 295
spelling	10.1016/j.quascirev.2022.107761 doi (DE-627)ELV059205016 (ELSEVIER)S0277-3791(22)00392-4 DE-627 ger DE-627 rda eng 550 VZ 38.15 bkl Bhadra, Sudhira R. verfasserin (orcid)0000-0003-2698-4047 aut A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon. Indian monsoon Mid-pleistocene transition Planktic foraminifera Quaternary Saraswat, Rajeev verfasserin aut Enthalten in Quaternary science reviews Amsterdam [u.a.] : Elsevier, 1982 295 Online-Ressource (DE-627)303614544 (DE-600)1495523-4 (DE-576)259484040 0277-3791 nnns volume:295 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.15 Historische Geologie: Allgemeines VZ AR 295
allfields_unstemmed	10.1016/j.quascirev.2022.107761 doi (DE-627)ELV059205016 (ELSEVIER)S0277-3791(22)00392-4 DE-627 ger DE-627 rda eng 550 VZ 38.15 bkl Bhadra, Sudhira R. verfasserin (orcid)0000-0003-2698-4047 aut A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon. Indian monsoon Mid-pleistocene transition Planktic foraminifera Quaternary Saraswat, Rajeev verfasserin aut Enthalten in Quaternary science reviews Amsterdam [u.a.] : Elsevier, 1982 295 Online-Ressource (DE-627)303614544 (DE-600)1495523-4 (DE-576)259484040 0277-3791 nnns volume:295 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.15 Historische Geologie: Allgemeines VZ AR 295
allfieldsGer	10.1016/j.quascirev.2022.107761 doi (DE-627)ELV059205016 (ELSEVIER)S0277-3791(22)00392-4 DE-627 ger DE-627 rda eng 550 VZ 38.15 bkl Bhadra, Sudhira R. verfasserin (orcid)0000-0003-2698-4047 aut A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon. Indian monsoon Mid-pleistocene transition Planktic foraminifera Quaternary Saraswat, Rajeev verfasserin aut Enthalten in Quaternary science reviews Amsterdam [u.a.] : Elsevier, 1982 295 Online-Ressource (DE-627)303614544 (DE-600)1495523-4 (DE-576)259484040 0277-3791 nnns volume:295 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.15 Historische Geologie: Allgemeines VZ AR 295
allfieldsSound	10.1016/j.quascirev.2022.107761 doi (DE-627)ELV059205016 (ELSEVIER)S0277-3791(22)00392-4 DE-627 ger DE-627 rda eng 550 VZ 38.15 bkl Bhadra, Sudhira R. verfasserin (orcid)0000-0003-2698-4047 aut A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon. Indian monsoon Mid-pleistocene transition Planktic foraminifera Quaternary Saraswat, Rajeev verfasserin aut Enthalten in Quaternary science reviews Amsterdam [u.a.] : Elsevier, 1982 295 Online-Ressource (DE-627)303614544 (DE-600)1495523-4 (DE-576)259484040 0277-3791 nnns volume:295 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.15 Historische Geologie: Allgemeines VZ AR 295
language	English
source	Enthalten in Quaternary science reviews 295 volume:295
sourceStr	Enthalten in Quaternary science reviews 295 volume:295
format_phy_str_mv	Article
bklname	Historische Geologie: Allgemeines
institution	findex.gbv.de
topic_facet	Indian monsoon Mid-pleistocene transition Planktic foraminifera Quaternary
dewey-raw	550
isfreeaccess_bool	false
container_title	Quaternary science reviews
authorswithroles_txt_mv	Bhadra, Sudhira R. @@aut@@ Saraswat, Rajeev @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
hierarchy_top_id	303614544
dewey-sort	3550
id	ELV059205016
language_de	englisch
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author	Bhadra, Sudhira R.
spellingShingle	Bhadra, Sudhira R. ddc 550 bkl 38.15 misc Indian monsoon misc Mid-pleistocene transition misc Planktic foraminifera misc Quaternary A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean
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topic_title	550 VZ 38.15 bkl A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean Indian monsoon Mid-pleistocene transition Planktic foraminifera Quaternary
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title	A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean
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title_full	A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean
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title_sort	a strong influence of the mid-pleistocene transition on the monsoon and associated productivity in the indian ocean
title_auth	A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean
abstract	The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon.
abstractGer	The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon.
abstract_unstemmed	The short-term variability in the Indian monsoon is well documented through instrumental records and paleoclimatic studies of the recent geological past. However, the effect of mid-Pleistocene transition (MPT) on the Indian monsoon has not been discussed extensively due to the scarcity of long-term records of changes in monsoon strength. We have used a 1.45 myr record of planktic foraminifera assemblages from the Site U1446 to understand the effect of the MPT on monsoon and associated processes. From the variability in the abundance of the summer monsoon assemblage, it is evident that the Indian summer monsoon (ISM) was stronger during the warm interstadials and weaker during the stadials, whereas the winter monsoon assemblage suggests a weakened winter monsoon during the interstadials. From the variation in eutrophic assemblage, it is inferred that, throughout the studied interval, productivity was controlled by the ISM. We report a large-scale reorganization of the Indian monsoon system after the onset of the MPT, which resulted in the strengthening of ISM. We also report that during the post MPT period, the summer monsoon was influenced by the 23 kyr precession cycle and the 100 kyr eccentricity cycle strongly modulated the winter monsoon.
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title_short	A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean
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up_date	2024-07-06T21:17:25.922Z
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score	7.401354

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A strong influence of the mid-Pleistocene transition on the monsoon and associated productivity in the Indian Ocean

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Vorhandene Bände

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