As to Sr/Ca ratio and δ 13C proxy, especially Sr/Ca ratio, there had a close correlation with summer half year precipitation, in which the variability of Sr/Ca to precipitation d (Sr/Ca)/dP is -0.045/mm.
The results show that: (1) The mean annual rainfall amount is 479.3 mm in test field, and the yearly relative variability is 0.6%~57.8%, average 23.1%, which demonstrates an obvious divergence on annual rainfall.
The results showed that gastropod shells in Xincuo Lake were formed in summer half year, so that trace elements, stable isotope in shells just recorded the climatic signals of the summer half year instead of those of the whole year, Mg/Ca ratio and δ 18O proxy had a certain correlativity with summer half year air temperature, in which δ 18O proxy was more sensitive with variability of δ 18O to temperature d δ 18O/dT 1 64‰/℃;
2. Let X be a connected T_1-space, then X has most variability set if and only if there exist closed sets H_1, H_2, H_3, with following conditions:(i)The interior of H_i is nonempty for cach i j=1, 2, 3.(ii)j=1, 2, 3. (iii)H_3 is resolvable.
The field-to-field variability of residues is the largest source of uncertainty (80%-100%) of residue data, generally followed by the within-field (30%-40%), sampling process (20%-30%) and analytical (10%-20%) variability.
Compared with other human competences,moral competence is characterized by its unification of passivity and initiativeness,universality and individuality,stability and variability,and autonomy and consistence.
However, in this case, due to the rapid time-variability of the underwater channel, and the influence of inter-symbol interference (ISI) and inter-channel interference (ICI), the conventional rake receiver may fail to function.
By updating coefficients at chip rate and feeding back hypothesized chips, it can track time-variability and combat ISI effectively.
The mechanism for polarized variability is so simple that only mechanical rotation is needed.
kwangtungensis; 4) variability in spatial distribution among the 105 canopy tree species could be attributed to variations to site environmental factors.
Spatial variability of throughfall in a Chinese pine (Pinus tabulaeformis) plantation in northern China