Use of a Problem-Oriented Database for Statistical Analysis of the Hydrochemical Characteristics of the Redox Layer of the Black Sea

被引：1
|
作者：
Podymov, O. I. [1 ]
机构：
[1] Russian Acad Sci, PP Shirshov Oceanol Inst, Southern Branch, Gelendzhik, Russia
来源：
OCEANOLOGY | 2008年 / 48卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S0001437008050056
中图分类号：
P7 [海洋学];
学科分类号：
0707 ;
摘要：
A problem-oriented database (PODB) was developed for the statistical analysis of the hydrochemical characteristics of the redox layer of the Black Sea. The paper describes the features of the PODB, including the algorithm of interpolation and the location of the levels of the appearance and disappearance of hydrochemical parameters (the so-called onset levels) based on Akima's spline. The application of the PODB allowed us to obtain a series of biogeochemical estimates, in particular, (1) to reveal the constancy of the vertical gradients of the hydrochemical parameters at selected density levels; (2) to calculate the seasonal variability of the degree of manifestation of the phosphate minimum in the near-shore and open sea areas; and (3) to calculate the interannual variability of the level of the disappearance of the hydrogen sulfide, ammonium, total manganese, and methane, as well as the oxygen content in the cold intermediate layer, and to find out their relations with the climatic variations.
引用
收藏
页码：656 / 663
页数：8
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