Oxygen concentrations in the oceans generally exhibit minimum values at intermediate depths and relatively high values in deep waters.
Soil δ15N increased with depth, reached maximum values at intermediate depths, and slightly decreased at greater depths.
The focal mechanisms of most events studied fall into three categories: (1) normal faulting with N S-oriented T-axes maiN S-orientedg at shallow depths, (2) reverse faulting with E–W-oriented P-axes domainlyng at intermediate depths, and (3) strike-slip faulting with N–S-occurringT-ateshallow–W-orientedepthses mainly seen at greater depths.
The slip behaviour on subduction zone megathrusts is generally characterized by predominantly aseismic slip in the shallow, up-dip region at temperatures below approximately 150°C, a seismogenic zone at intermediate depths and temperatures (10 to 40 km or 150°C to 350°C) where most large interplate earthquakes originate, and aseismic behaviour at greater depths down-dip (e.g. Hyndman et al. 1997).
The gastropod pattern is evident at intermediate depths, and so cannot be attributed to the unique features of abyssal ecology.
However, care must be taken when interpreting these results, as large numbers of single species were found at intermediate depths and will have skewed the picture toward describing bimodal peaks of diversity.
Carex secta, in contrast, showed greatest biomass at intermediate depths, and the best model for its depth response was a logistic hormesis model, for both above- and below-ground tissue.
Consequently, the three components in the mixing model include: (1) recently recharged groundwater (less than 60 years) at intermediate depths (between 151 and 176 mbls), (2) relatively old (approximately 6500 years old), native (H free) groundwater at intermediate depths, and (3) very old (approximately 21,000 years old), native deep groundwater.
The oldest fraction, f3, should account for about 35% of the flow contributed to the well based on wellbore flow data; however, this fraction was allowed to vary from 0.3 to 0.9 to account for contributions of flow from additional fractions of deep groundwater stored at intermediate depths and (or) to account for wellbore flow measurement uncertainty.
Figure 2a shows Al chemical maps recorded at different positions along the growth axis: close to the GaN buffer layer (left), an enlargement of a period at an intermediate depth (middle), and at the top part (right).
