Hasil Pencarian  ::  Simpan CSV :: Kembali

Hasil Pencarian

Ditemukan 7 dokumen yang sesuai dengan query
cover
Huggett, Richard John
Berlin: Springer-Verlag, 1991
551.6 HUG c
Buku Teks  Universitas Indonesia Library
cover
Diva Anastasia Putri
"Studi paleoklimatologi penting untuk memahami perubahan iklim masa lalu yang tidak tercatat secara instrumental dan menjadi dasar untuk memprediksi pola iklim masa depan. Penelitian ini bertujuan merekonstruksi kondisi paleoklimat di Perairan Utara Jayapura berdasarkan salah satu core dengan kode “UP”. Daerah Perairan Utara Jayapura merupakan salah satu pintu masuk Arlindo (Arus Lintas Indonesia) yang merupakan bagian dari sirkulasi perairan global, sehingga diperkirakan mampu merekam jejak perubahan iklim global. Analisis dilakukan secara multiproksi, meliputi distribusi ukuran butir, LOI (Loss on Ignition), unsur jejak (XRF), dan kelimpahan foraminifera. Hasil menunjukkan dominasi sedimen lempung dan lanau berbutir kasar, dengan struktur masif dan menyerpih. Stratigrafi vertikal menunjukkan perubahan energi pengendapan dari stabil ke dinamis. Peningkatan unsur Fe dan Ti di bagian dangkal menunjukkan peningkatan input daratan akibat curah hujan. Penanggalan relatif terhadap data radiokarbon menunjukkan umur sampel 13.625 BP (Pleistosen Akhir), dengan batas Holosen pada kedalaman 92 cm (~11.500 BP). Setelah batas tersebut, terjadi lonjakan kelimpahan foraminifera dominan seperti Globigerina bulloides, Globigerinoides ruber, Bolivina robusta, dan Trilobatus immaturus. Berdasarkan komposisi foraminifera dan indikator lingkungan, paleoklimat direkonstruksi dalam tiga periode: Pre-Holocene Climate Optimum (13.625–11.875 BP), Holocene Climate Optimum (11.625–9.125 BP), dan Post-Holocene Climate Optimum (8.875–0 BP), yang masing-masing mencerminkan variasi suhu, curah hujan, oksigen, kedalaman termoklin, dan dinamika sedimen sejak Pleistosen Akhir hingga Holosen.

Paleoclimatology studies are important for understanding past climate changes that are not recorded instrumentally and as a basis for predicting future climate patterns. This study aims to reconstruct paleoclimate conditions in the North Jayapura Waters based on one of the marine sedimentary core coded "UP". The Northerm Jayapura Waters area is one of the entrances of ITF (Indonesian Through Flow) which is part of the global water circulation, so it is estimated to be able to record traces of global climate change. The analysis was carried out using a multiproxy method, including grain size distribution, LOI (Loss on Ignition), trace elements (XRF), and foraminifera abundance. The results show the dominance of coarse-grained silt sediments, with massive and flaky structures. Vertical stratigraphy shows changes in depositional energy from stable to dynamic. Increased Fe and Ti elements in the shallow part indicate increased land input due to rainfall. Relative dating to radiocarbon data shows the age of the sample is 13,625 BP (Late Pleistocene), with the Holocene boundary at a depth of 92 cm (~11,500 BP). After this boundary, there is a surge in the abundance of dominant foraminifera such as Globigerina bulloides, Globigerinoides ruber, Bolivina robusta, and Trilobatus immaturus. Based on the composition of foraminifera and environmental indicators, the paleoclimate is reconstructed into three periods: Pre-Holocene Climate Optimum (13,625–11,875 BP), Holocene Climate Optimum (11,625–9,125 BP), and Post-Holocene Climate Optimum (8,875–0 BP), which reflect the variations in temperature, precipitation, oxygen, thermocline depth, and sediment dynamics from the Late Pleistocene to the Holocene, respectively."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2025
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
Vler, I.M. van der [Isaal`k Martinus]
Utrecht: W. de Haan, 1950
BLD 949.201 VLE n
Buku Teks SO  Universitas Indonesia Library
cover
New Jersey: Wiley-Blackwell, 2008
551.609 NAT
Buku Teks  Universitas Indonesia Library
cover
Ukraintseva, Valentina V.
""The study of fossilised remains of herbivorous animals, particularly those rare findings with well-preserved gastrointestinal tracts filled with plant remains, is crucial to our understanding of the environment in which they lived. Summarising 30 years of research, Ukraintseva presents evidence on plants once eaten by Siberia's major herbivorous mammals. The collection of pollen and plant spores from food remains sheds light on the vegetation of these ancient habitats, enabling researchers to reconstruct local floras of the time. This also promotes further insight into the causes of the extinction of various species due to changing environmental conditions and food availability. Providing a history of the research undertaken, the book also includes specific chapters on the Cherski horse and bison, along with the vegetation and climate of Siberia in the late Anthropogene period, making it a lasting reference tool for graduate students and researchers in the field"--"
Cambridge, UK: Cambridge University Press, 2013
569.67 UKR m
Buku Teks  Universitas Indonesia Library
cover
Berger, Andre, editor
"Experts in climate and water sciences from Canada, the United States, Brazil, Denmark, Germany, Belgium, France, Serbia, and other European countries and the UNESCO gathered at the Serbian Academy of Sciences and Arts on the occasion of the 130th birthday anniversary of the geophysicist Milutin Milankovitch. The collection of their presentations is opened by an update on the climate situation after the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Further topics include various issues of paleoclimatology, in particular as it helps reduce uncertainties from which prospects for climate change suffer, ecohydrology and climate change at the watershed scale, and regional climate models, which are discussed in terms of both their improved modeling and their use in studies of a polynya in the Antarctica and expected changes in the Mediterranean region."
Wien: Springer, 2012
e20401959
eBooks  Universitas Indonesia Library
cover
Dallas: SMU Press, 1975
913.397 PRO
Buku Teks SO  Universitas Indonesia Library