Contourite drift systems form a significant component of the marine clastic sedimentary record. Although contourites form in all tectonic settings, few studies have described their development along convergent margins; such characterization is needed to underpin oceanographic and palaeoenvironmental studies in active settings. This study is the first to document contourite drift development along the Hikurangi subduction margin of New Zealand. Integration of bathymetric, seismic and well data enables five classes of drift to be recognized around the subduction wedge, occurring in three principal associations: (i) an upper slope drift association of giant elongate mounded (ca 150 km long, 50 km wide and up to 1100 m thick) and plastered drifts (ca 300 km long, 8 km wide and <600 m thick), which occurs upon and inboard of a major intrabasinal thrust-cored high, whose long axis parallels the coast; shallow bottom currents disperse sub-parallel to this axis; (ii) a spatiotemporally discontinuous association of confined and mounded hybrid drifts (ca 500 m long, <2 km wide and up to 500 m thick) that occurs along the mid-toouter slope domain of the wedge, recording the interaction of along-slope and downslope currents within trench-slope basins; and (iii) a trench fill assemblage that implies the passage of abyssal bottom currents across a 40 km reach of the trench-axial Hikurangi Channel-lev ee, with associated modification of the channel form and of overbank sediment waves. The fundamental presence of contourites along this margin appears to depend on the orientation and strength of oceanographic bottom currents. However, drift type and evolution vary depending on the slope gradient and the presence of irregular seafloor topography created by tectonic structures. The documented drifts are generally smaller, less continuous, and develop more intermittently than similar styles of drifts documented on passive margins; this mode of occurrence may be characteristic of contourite development on convergent margins.
Stress has the potential to impair accurate decoding of others' communicntion. This expm'ment tested the effects of stress, induced through the S t m p Color-Word Test, on the accurate decoding of kinesic and vocalic emotional expressions. Respondents (N = 372) viewed or heard 30 emotional expressions interspersed with multichannel color stimuli that were redundant with one another (lour stress) or conflicted with oneanother (high stress). Analyses of accuracy scores across three triuls supported three of four hypotheses. Stress debilitated accuracy primarily in the vocalic channel and nt the onset of stress. The kinesic facial channel also produced consistently higher accuracy than the vocalic channel, and females achieved higher accuracy than males, but this superiority dissipated by the third trial. ndividuals commonly experience stress in their daily interactions in response to such factors as interpersonal conflicts, I role expectations, work pressures, and school demands.Scientific research on stress includes studies dealing with psychological and physiological responses, the causes of stress, and methods for coping with it. Well over 120,000 books and articles have been written on stress-related topics (Selye, 1979)) yet few have addressed the impact of situational stress on communication. Of these few communication-related writings, most have focused on the role of Maureen Keeley-Dyreson is an Instructor at the University of Texas-Pan-American. J u d e K. Burgoon is Professor and William Bailey is Lecturer of Communication at the University of Arizona.
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