Order number
page 24
940330-160606-96
-001-001
set 11 with 111 of 111 items
reef data sets. Canonical variates analyses, (CVA)
separated populations from depth zones alony single,
highly significant, functions. Centroids and 95%
confidence intervals, calculated from CVA scores of
colonies in each population, are widely separated for
the lagoon reef and combined data sets. Conversely,
populations from shallow and intermediate depths on the
outer reef display overlapping confidence bars
indicative of more gradational morphologic changes. When
CV's were used to classify specimens to groups,
misassignments of intermediate depth specimens to
shallow or deep-water populations underscored the
gradational nature of the environment. Completely
intergrading populations of Favia pallida collected from
different depths can be morphologically separated into
statistically distinct groupings. A stratigraphic
succession of such morphotypes might be interpreted as
abruptly appearing separate species if sampling were not
as uniform, systematic, and detailed as was possible on
modern reefs. Analyses of evolutionary patterns must
carefully assess potential effects of clinal variation
if past evolutionary patterns are to be interpreted
correctly.
COASTAL REGIONS/geomorphology ;CORALS/morphology ;
KEYWORDS
ENIWETOK/coastal
regions
;CLASSIFICATION; CLIMATES;
GEOMORPHOLOGY ; CORALS ; MORPHOLOGY ; CORRELATIONS ; DEPTH;
ENIWETOK; ENVIRONMENTAL EFFECTS; GEOLOGIC HISTORY;
QUATERNARY PERIOD; REEFS; SAMPLING; STRATIGRAPHY; VARIATIONS
EDB
Item
32
ANALYTIC TITLE ENGLISH
ANALYTIC AUTHOR/AFFIL
PAGE RANGE
PUB. DATE (YYMMDD)
LIMITATION CODE
ABSTRACT
Introduction: Enewetak Atoll and the PEACE program
Henry, T.W.; Wardlaw, B.R.
A1-A29
900000
UNL
An extensive study was made from June 1984 through
August 1985 of the surface and subsurface configurations
of two large nuclear craters on the northern side of
Enewetak Atoll, Republic of the Marshall Islands. These
craters,
KOA and OAK,
resulted from the near-surface
detonation of two high-yield thermonuclear devices .in
1958,
when the atoll was part of the Pacific Proving
Grounds. This multidisciplinary study was designed to
produce a broad well-documented geologic, geophysical,
and materials-properties data base for use in answering
critical questions concerning craters formed by
high-yield bursts.
The study was part of a larger
research initiative by the US Department of Defense to
better understand high-yield, strategic-scale nuclear
9003%58