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All Journal Jurnal Biologi Udayana ILMU KELAUTAN: Indonesian Journal of Marine Sciences Omni-Akuatika Jurnal Perikanan Universitas Gadjah Mada Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) PELAGICUS: Jurnal IPTEK Terapan Perikanan dan Kelautan Journal of Fisheries & Marine
Eko Setyobudi
Department Of Fisheries, Faculty Of Agriculture, Universitas Gadjah Mada. Indonesia.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Immunology & microbiology

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Journal : ILMU KELAUTAN: Indonesian Journal of Marine Sciences

 1 
Assessing the Reliability of Planktic Foraminifera Ba/Ca as a Proxy for Salinity off the Sunda Strait Riza Yuliratno Setiawan; Anindya Wirasatriya; Hasrizal Bin Shaari; Eko Setyobudi; Faizal Rachman
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 4 (2017): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (26.836 KB) | DOI: 10.14710/ik.ijms.22.4.201-212

Abstract

The Ba/Ca ratio of planktic foraminifera carbonate serves as a new geochemical proxy for seawater Ba/Ca and thus providing information on modern and past salinity and freshwater discharge. In this study the applicability of Ba/Ca ratio of core-top Globigerinoides sacculifer collected off the eastern tropical Indian Ocean (ETIO) for paleoceanographic reconstructions was investigated. In doing so, we conducted a series of cleaning experiments for Ba/Ca extraction by using different reductive solutions. Our new results suggest that the Ba/Ca ratio of G. sacculifer cannot be utilized as a tracer for modern and past salinity changes in the ETIO region off the Sunda Strait. We suggest that the existence of seasonal upwelling adds an additional signal to the seawater Ba/Ca in the ETIO, and thus complicates the interpretation of G. sacculifer Ba/Ca as a freshwater tracer. Moreover, our cleaning experiment results show that the cleaning protocol of Mg/Ca, DTPA, and hydroxylamine can be used to extract valuable Ba/Ca ratios from planktic foraminifera tests. Keywords: G. sacculifer Ba/Ca, foraminifera cleaning experiments, the Sunda Strait.
Co-Authors A. A. Sentosa Adhimas Febri Aryantojati Anindya Wirasatriya Bayu Eko Pranoto Carissa Paresky Arisagy Djumanto Djumanto Dwi Rachmanto Faizal Rachman Friyuanita Lubis Hasrizal Bin Shaari Ilma Fatimah Yusuf Larasati, Rakhma Fitria Maria Intan P. Devi Maria Intan Permata Devi Mike Gustiana Murwantoko . Murwantoko Murwantoko N. Nirwati Nahla Alfiatunnisa Namastra Probosunu Nyutriawan Arkan Hafish Praditha Novianingrum Rachma Cintya Kusumanigrum Rahmat Kurniawan Ratih Ida Adharini Riza Yuliratno Setiawan Rudiansyah Rudiansyah Senny Helmiati Soeparno Soeparno Suadi Suadi Vinta Seta Diani