Variability of the Indonesian Throughflow thermal profile over the last 25-kyr: A perspective from the southern Makassar Strait

Zhang, Peng; Xu, Jian; Schröder, Jan; Holbourn, Ann; Kuhnt, Wolfgang; Kochhann, Karlos Guilherme Diemer; Ke, Fei; Wang, Zhen; Wu, Hongling

doi:10.1016/j.gloplacha.2018.08.003

Cited by 10 publications

(16 citation statements)

References 77 publications

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“…Modern observations also suggest a close link between the thermal evolution of the ITF and ENSO dynamics (Delcroix & McPhaden, 2002; Ffield et al., 2000; Picaut et al., 1996; Yan et al., 1992; Zhang et al., 2018). During El Niño episodes, SST and TT are low and ΔT is large in the ITF region due to eastward displacement of the center of the IPWP in response to weakened trade winds.…”

Section: Discussionmentioning

confidence: 98%

“…During El Niño episodes, SST and TT are low and ΔT is large in the ITF region due to eastward displacement of the center of the IPWP in response to weakened trade winds. Westward movement of the IPWP center under the effect of enhanced trade winds during La Niña episodes causes increases in SST and TT and a decrease in ΔT in the ITF region (Delcroix & McPhaden, 2002; Ffield et al., 2000; Picaut et al., 1996; Yan et al., 1992; Zhang et al., 2018). Thus, it is plausible that the thermal evolution of the ITF was also influenced by ENSO‐like states during the past ∼120 kyr.…”

Section: Discussionmentioning

confidence: 99%

“…The climate over the maritime continent between the Pacific and Indian Oceans is also strongly affected by variations in the intensity and hydrological characteristics of the Indonesian Throughflow (ITF), which provides the sole low‐latitude connection between the Pacific and Indian Oceans, thus regulating the thermohaline balance between these oceans (Ffield et al., 2000; Gordon, 2005; Hendrizan et al., 2017; Holbourn et al., 2011; Qu et al., 2005; Xu et al., 2008; Zhang et al., 2018, 2020). Today, approximately 10 Sv (1 Sv = 10 6 m 3 /s) of water flows from the tropical western Pacific Ocean into the Indian Ocean through the Indonesian Archipelago due to the pressure gradient between these oceans, thus forming the ITF (Cresswell et al., 1993; Gordon, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al. (2018) proposed that the decline in TT and intensification of the temperature difference between the sea surface and thermocline (ΔΤ) from 11 to 2.5 ka in the ITF region can be partly attributed to increasing El Niño‐like activity. Recently, Zhang et al.…”

Section: Introductionmentioning

confidence: 99%

“… Map of coring sites referred to in this study. The yellow star marks the location of core SO217‐18540, the yellow dots indicate the stalagmite site of Gunung Buda on Borneo (Carolin et al., 2013, 2016; Partin et al., 2007) and the locations of deep‐sea cores MD06‐3067 (Bolliet et al., 2011), MD10‐3340 (Dang et al., 2015), MD01‐2378 (Xu et al., 2006, 2008; Zuraida et al., 2009), SO139‐74KL (Wang et al., 2018), SO217‐18515 (Zhang et al., 2018) and MD01‐2386 (Jian et al., 2020). Cross‐shaded areas represent the Flores Sea and Java‐Sumatra upwelling areas (Gordon, 2005; Mohtadi et al., 2009).…”

Section: Introductionmentioning

confidence: 99%

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Variability in Indonesian Throughflow Upper Hydrology in Response to Precession‐Induced Tropical Climate Processes Over the Past 120 kyr

Zhang

Beil

et al. 2021

JGR Oceans

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The Indonesian Throughflow (ITF), as the sole low‐latitude conduit connecting the Pacific and Indian Oceans, regulates the thermohaline balance between these oceans. Thus, investigating the variability in the ITF and its relationship with the precessional forcing is crucial for understanding the drivers of tropical climate change. Here, we reconstruct the history of the ITF over the past ∼120 kyr based on high‐resolution (∼400 years) δ18O and Mg/Ca records of Globigerinoides ruber and Pulleniatina obliquiloculata from core SO217‐18540 retrieved from the Flores Sea upwelling region within the main pathway of the ITF. A comparison of these new records with published paleo‐oceanographic and climatological data from the western tropical Pacific Ocean suggests that annual mean conditions in the Flores Sea were controlled by ITF variability rather than by monsoonal upwelling. Our results further indicate that precessional insolation was a major forcing for the hydrological evolution of the ITF during the past 120 kyr. We suggest that the precessional insolation forcing paced ITF variability by modulating the mean state of El Niño‐Southern Oscillation‐like conditions and latitudinal shifts and/or expansion/contraction of the Intertropical Convergence Zone.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Variability in Indonesian Throughflow Upper Hydrology in Response to Precession‐Induced Tropical Climate Processes Over the Past 120 kyr

Zhang

Beil

et al. 2021

JGR Oceans

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Kalimantan hydroclimate variability since the last glacial period

Hendrizan

Kuhnt

Holbourn

et al. 2022

Int J Earth Sci (Geol Rundsch)

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Changes in convective activity and hydroclimate over Northeastern Kalimantan are key features to understand glacial to interglacial climate evolution in the center of the West Pacific Warm Pool during the Late Pleistocene to Holocene. We use high-resolution X-ray fluorescence (XRF) scanner-derived elemental ratios in sediment Core SO217-18522 (1º 24.106’ N, 119º 4.701’E, 975 m water depth) recovered from the northern Makassar Strait to reconstruct changes in precipitation-related weathering and erosion over Northeastern Kalimantan over the last 50 kyr. Enhanced seasonality of rainfall and an extended dry season during Heinrich Stadials (HS4 to HS1) and the Younger Dryas (YD) suggest weakening of the tropical convection associated with a southward shift of the tropical rain belt and the annual mean position of the Intertropical Tropical Convection Zone. Increasing sediment discharge and intensification of convective activity occurred during the early to mid-Holocene during an interval of high Northern Hemisphere insolation, elevated atmospheric pCO2 levels and global warming. Our reconstructions in comparison with regional terrestrial and marine records highlight the high spatial variability of Kalimantan hydroclimate on millennial to glacial-interglacial timescales.

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