Search Results - "Rifai, Hamdi"
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Savanna in equatorial Borneo during the late Pleistocene
Published in Scientific reports (25-04-2019)“…Equatorial Southeast Asia is a key region for global climate change. Here, the Indo-Pacific Warm Pool (IPWP) is a critical driver of atmospheric convection…”
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Spatio-temporal evolution of Australasian monsoon hydroclimate over the last 40,000 years
Published in Earth and planetary science letters (01-05-2019)“…Maritime Continent (MC) convection drives zonal and meridional climate modes, including the Australasian monsoon system, but its role in past global climate…”
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Magnetic Susceptibility of Pumice at Mount Singgalang, West Sumatera
Published in Manazhim (Lombok Timur) (01-08-2023)“…Volcanic activity produces eruptions that release pyroclastic material at the time of the explosion. Mount Singgalang is a volcano that has experienced an…”
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Antiphase response of the Indonesian–Australian monsoon to millennial-scale events of the last glacial period
Published in Scientific reports (23-11-2022)“…Antiphase behaviour of monsoon systems in alternate hemispheres is well established at yearly and orbital scales in response to alternating sensible heating of…”
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Coral geochemical response to uplift in the aftermath of the 2005 Nias–Simeulue earthquake
Published in Scientific reports (15-04-2024)“…On 28 March 2005, the Indonesian islands of Nias and Simeulue experienced a powerful M w 8.6 earthquake and coseismic uplift and subsidence. In areas of…”
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Author Correction: Savanna in equatorial Borneo during the late Pleistocene
Published in Scientific reports (03-03-2020)“…An amendment to this paper has been published and can be accessed via a link at the top of the paper…”
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The Characterization of the Hydrophobic Surface of Nanocomposites Aloe vera/PS for Antimicrobial Pathogens
Published in Science & technology Indonesia (01-04-2023)“…The spread of pathogenic microorganisms on a large scale creates a health disaster for the world. Modifying the surface of the fabric so that it is…”
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Multi-proxy validation of glacial-interglacial rainfall variations in southwest Sulawesi
Published in Communications earth & environment (01-12-2023)“…Abstract Speleothem δ 18 O is widely used as a proxy for rainfall amount in the tropics on glacial-interglacial to interannual scales. However, uncertainties…”
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Coral 13 C/ 12 C records of vertical seafloor displacement during megathrust earthquakes west of Sumatra
Published in Earth and planetary science letters (01-12-2015)Get full text
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Identification of Clay Element Content in Fabric Dyeing Process Using X-Ray Fluorescence Spectrometry
Published in Jurnal Fisika (28-05-2022)“…Clay in West Sumatra has been used as a natural dye for batik, so the batik is known as clay batik. The dyeing of the cloth is done by boiling and soaking the…”
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Tropical environmental change in North Sumatra at the Last Glacial Maximum: Evidence from the stable isotope composition of cave guano
Published in Palaeogeography, palaeoclimatology, palaeoecology (15-09-2022)“…Insular Southeast Asia is of critical importance to global biodiversity, climate, and socioeconomics. Past environmental histories are a crucial factor…”
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Branched GDGT source shift identification allows improved reconstruction of an 8,000-year warming trend on Sumatra
Published in Organic geochemistry (01-12-2023)“…Branched Glycerol Dialkyl Glycerol Tetraethers (brGDGTs) in sedimentary archives are increasingly used for paleotemperature reconstructions due to their strong…”
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Remobilization and eruption of an upper crustal cumulate mush at the Singkut caldera (North Sumatra, Indonesia)
Published in Journal of volcanology and geothermal research (01-01-2024)“…Understanding the conditions and timescales of storage and remobilization of magma bodies in the upper crust is key to interpreting the signals of potential…”
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A shifty Toba magma reservoir: Improved eruption chronology and petrochronological evidence for lateral growth of a giant magma body
Published in Earth and planetary science letters (15-11-2023)“…Polycyclic caldera complexes hold clues to understanding why some magmatic systems develop into supersized magma bodies and how they can recover to produce…”
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The impact of soil chemistry, moisture and temperature on branched and isoprenoid GDGTs in soils: A study using six globally distributed elevation transects
Published in Organic geochemistry (01-01-2024)“…Glycerol dialkyl glycerol tetraethers (GDGTs) are microbial membrane-spanning lipids that are produced in a variety of environments. To better understand the…”
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Disentangling seasonal and annual precipitation signals in the tropics over the Holocene: Insights from δD, alkanes and GDGTs
Published in Quaternary science reviews (15-11-2024)“…Rainfall seasonality in the tropics has a substantial impact on both ecosystems and human livelihoods. Yet, reconstructions of past rainfall variability have…”
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Stable isotope composition of cave guano from eastern Borneo reveals tropical environments over the past 15,000calyrBP
Published in Palaeogeography, palaeoclimatology, palaeoecology (01-05-2017)“…Insular southeast Asia is a key driver for global atmospheric and oceanic circulation, is a hotspot for biodiversity and conservation, and is likely to have…”
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Characterization of Magnetic Minerals of Iron Sand Pasia Nan Tigo Padang Beach Using X-Ray Diffraction (XRD)
Published in Indonesian journal of applied physics (12-04-2022)“…The mineral extraction of iron sand from Pasia Nan Tigo Beach has been carried out. Iron sands in this area are widely spread and have decent potential but…”
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