Upwelling Dynamic Based on Satellite and INDESO Data in the Flores Sea

Kurniawan, Reski; Suriamihardja, Dadang Ahmad; Assegaf, Alimuddin Hamzah

doi:10.1088/1742-6596/979/1/012049

Cited by 3 publications

(5 citation statements)

References 2 publications

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“…Among them, the Flores Sea, where core SO217‐18540 was recovered, is one of the most biologically productive areas at low latitudes due to the seasonal occurrence of upwelling. Thus, vertical mixing plays a dominant role in controlling the interannual variability in the upper water column in this region (Gordon, 2005; Kurniawan et al., 2018) (Figure 1). The Flores upwelling and the better‐known Java‐Sumatra upwelling are driven by the Australian‐Indonesian winter monsoon (AIWM), which is part of the larger‐scale Austral‐Asian monsoon system.…”

Section: Regional Hydrological Backgroundmentioning

confidence: 99%

“…The Flores upwelling and the better‐known Java‐Sumatra upwelling are driven by the Australian‐Indonesian winter monsoon (AIWM), which is part of the larger‐scale Austral‐Asian monsoon system. During austral winter (June–September), southeast winds drive the surface water of the Flores Sea away from the coast, initiating the Flores upwelling and subsequently reducing both SST (27.6°C) and TT (22.9°C) and enhancing the ΔΤ (4.7°C) (Figure 2) (Gordon, 2005; Kurniawan et al., 2018). In contrast, the Flores upwelling ceases during austral summer (December‐March) due to the advection of surface water driven by northwest winds toward the coastal region, which results in increased SST (28.2°C) and TT (23.9°C) and decreased ΔΤ (4.3°C) (Figure 2) (Gordon, 2005; Kurniawan et al., 2018).…”

Section: Regional Hydrological Backgroundmentioning

confidence: 99%

“…both SST (27.6°C) and TT (22.9°C) and enhancing the ΔΤ (4.7°C) (Figure 2) (Gordon, 2005;Kurniawan et al, 2018). In contrast, the Flores upwelling ceases during austral summer (December-March) due to the advection of surface water driven by northwest winds toward the coastal region, which results in increased SST (28.2°C) and TT (23.9°C) and decreased ΔΤ (4.3°C) (Figure 2) (Gordon, 2005;Kurniawan et al, 2018 (Schlitzer, 2018). (a and c) SST and TT during austral summer (January); (b and d) SST and TT during austral winter (July); temperature-depth profiles of austral summer (e) and winter (f) at the station (6.5°S, 119.5°E) near the location of core SO217-18540 (6.87°S, 119.58°E).…”

Section: Regional Hydrological Backgroundmentioning

confidence: 99%

Section: Regional Hydrological Backgroundmentioning

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: Regional Hydrological Backgroundmentioning

confidence: 99%

Section: Regional Hydrological Backgroundmentioning

confidence: 99%

Section: Regional Hydrological Backgroundmentioning

confidence: 99%

Section: Regional Hydrological Backgroundmentioning

confidence: 99%

See 2 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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“…In addition, north of Labuan Bajo is the trajectory for transferring large water masses from the Pacific Ocean to the Indian Ocean, commonly referred to as the Indonesian Through Flow (ITF). According to Kurniawan, the temperature in the northern waters of Labuan Bajo is dominated by warm waters that occur in the western season, transition one, and transition two [7]. Meanwhile, the temperature of cold waters occurs in the east monsoon, where the wind blows over the sea surface faster than usual.…”

Section: Regional Seafloor and Oceanographic Settingmentioning

confidence: 99%

An investigation of seafloor and oceanographic characteristics in deep-water of north Labuan Bajo, Indonesia

Haryanto,

Nugroho,

Febriawan

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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On 12 December 1992, an earthquake, followed by a tsunami, occurred on Flores Islands, creating massive damage in the northern area and resulting in an early warning tsunami for the Labuan Bajo region. This area is a high-priority tourist designation in Indonesia with busy offshore activities and infrastructure development. Thus, earthquake and tsunami mitigation strategies are mandatory. Part of the mitigation effort is mapping the seafloor and characterizing oceanographic conditions in the deep-water north of this area. This paper describes the seafloor and oceanographic conditions using a multibeam echosounder (MBES) survey, conductivity-temperature-depth (CTD) measurement, and current observation. Results show that the rough and complex seafloor topography is revealed in the study area. Seafloor topography consists of a steep slope on the nearshore, flat topography in the sublittoral and shelf, a steeper slope in the bathyal zone, and relatively flat in the abyssal zone found from the south to north in the area. In addition, physical oceanographic properties are observed in two locations with a maximum depth measurement of 3,029 m. The result indicates that the water column is divided into three layers based on gradient changes: surface layer, thermocline layer, and colder depth layer. Moreover, two single-point current measurements at the exact locations are carried out at water depths of 3,029 m and 1,880 m. Result also describes that both stations have current directions of 128.14° and 124.49°, with current magnitudes of 0.1693 m/s and 0.3724 m/s, respectively. This investigation could serve as primary data and information in the study area. Furthermore, it could support the government and other stakeholders related to the development of Labuan Bajo, e.g., infrastructure (submarine cable, port, etc.) and resilience program (e.g., tsunami early warning system) that region

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Climatological oceanic-driven upwelling in the Western North Sumatera Waters using INDESO (2008-2014)

Ilhamsyah

Koesmaryono

Hidayat

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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Upwelling Dynamic Based on Satellite and INDESO Data in the Flores Sea

Cited by 3 publications

References 2 publications

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

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

An investigation of seafloor and oceanographic characteristics in deep-water of north Labuan Bajo, Indonesia

Climatological oceanic-driven upwelling in the Western North Sumatera Waters using INDESO (2008-2014)

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