scholarly journals PROPOSAL OF SIMPLE MEASUREMENT METHOD FOR EVAPORATIO RATE BY USING OXYGEN ISOTOPIC RATIO IN THE INAWASHIRO LAKE

2008 ◽  
Vol 52 ◽  
pp. 289-294
Author(s):  
Kazuha MIYAJI ◽  
Satoshi OKADA ◽  
Hiroyuki II ◽  
Hisao NAGABAYASHI
2013 ◽  
Vol 40 (12) ◽  
pp. 1897-1901
Author(s):  
Tie-Jun LI ◽  
Hong-Wei LI ◽  
Xiu-Jin LIU ◽  
Lian-Jun FENG

2016 ◽  
Vol 498 ◽  
pp. 385-394 ◽  
Author(s):  
Roberto Ferrarini ◽  
Gian Maria Ciman ◽  
Federica Camin ◽  
Serena Bandini ◽  
Carlo Gostoli

2015 ◽  
Vol 57 (3) ◽  
pp. 295-306
Author(s):  
Kotaro NAKATA ◽  
Takuma HASEGAWA ◽  
Mari YOSHIOKA ◽  
Takahiro IIDA

2012 ◽  
Vol 8 (2) ◽  
pp. 831-839 ◽  
Author(s):  
S. Alessio ◽  
G. Vivaldo ◽  
C. Taricco ◽  
M. Ghil

Abstract. We evaluate the contribution of natural variability to the modern decrease in foraminiferal δ18O by relying on a 2200-yr-long, high-resolution record of oxygen isotopic ratio from a Central Mediterranean sediment core. Pre-industrial values are used to train and test two sets of algorithms that are able to forecast the natural variability in δ18O over the last 150 yr. These algorithms are based on autoregressive models and neural networks, respectively; they are applied separately to each of the δ18O series' significant variability components, rather than to the complete series. The separate components are extracted by singular-spectrum analysis and have narrow-band spectral content, which reduces the forecast error. By comparing the sum of the predicted low-frequency components to its actual values during the Industrial Era, we deduce that the natural contribution to these components of the modern δ18O variation decreased gradually, until it reached roughly 40%, as early as the end of the 1970s.


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