Seismic wave velocities in the uppermost mantle beneath New Zealand

Seismic wave velocities in the uppermost mantle beneath New Zealand
复制标题

新西兰下方最上地幔的地震波速度

DOI:
10.1080/00288306.1979.10424223
复制
发表时间:
1979
期刊:
影响因子:
--
通讯作者:
A. Haines
A. Haines
中科院分区:
--
文献类型:
--
作者:
A. Haines

文献摘要

被引文献

相似文献

通过绘制 Pn 和 Sn 速度的变化图,研究了新西兰下方最上地幔的横向不均匀程度。需要十个结构恒定的区域来模拟速度分布,范围从北岛中部下方的 Pn 和 Sn 分别为 7·4 km/s 和 3·95 km/s,到尼尔森下方的 8·7 km/s 和 4·8 krn/s。有人建议,这些区域根据最上地幔的成分是超镁铁质还是镁铁质以及根据开放裂缝和熔体的浓度来划分。
The extent of lateral inhomogeneity in the uppermost mantle beneath New Zealand has been studied by mapping the variation of Pn and Sn velocities. Ten regions of constant structure were required to model the distribution of velocities, which range from 7·4 km/s and 3· 95 km/s for Pn and Sn respectively, beneath the central North Island, to 8· 7 km/s and 4· 8 krn/s beneath Nelson. It is suggested that the regions partition the uppermost mantle according to whether its constituents are ultramafic or mafic and according to the concentrations of open cracks and melt.