Shun-ichi UENO
Additions to the
Group of Trechiama
oni (Coleoptera, Trechinae)
|
Two
new trechine beetles of the
group of Trechiama oni are described
from the upper hypogean zone of western Honshu, West Japan, under the
names of T. angustus and T. obliquus.
The former belongs to the oni complex within the
species-group, while the latter to the kosugei complex
as was preliminarily
noted in the postscript to the revision of the group. |
Yasuhiko TANOKUCHI
Notes on
Cavernicolous Pselaphid Beetles from Saruta-do Cave, Southwest Japan
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The
male of Bythonesiotes longicornis JEANNEL is described
for the frst time,
and the male genitalia of Nipponobythus
plagiatus JEANNEL is redescribed on the basis of fresh specimens.
The
former is remarkable in the peculiar secondary sexual characters.
|
Youji INOKURA ,Kazuhisa
YoSHIMURA, Akihiro SUGIMURA and Takehiko HAIKAWA
Drainage Basins of
Springs in Akiyoshi-dai Plateau Evaluated by their
Discharge and Chemical Compositions
|
Discharge and the contents of dissolved
components were measured
12 times for 10 springs in Akiyoshi-dai (karst) Plateau from 1982 to
1984.
Drainage basins in Aidyoshi-dai Plateau were divided into Hirotani,
Kanoide,
Kuroiwa, Ono, Narutaki and Sowa on the basis of the topographic divide
and the
existence of two underground drainage systems, From the groundwater
balance
among 6 drainage basins, it is proved that much groundwater flows from
Kanoide
to Hirotani drainage basins in a stable discharge period, i.e., Kanoide
drainage basin is smaller than the assumed one. The areas of the
drainage
basins fluctuate depending on discharge, particularly in the case of
the
Kanoide drainage basin, which makes it difficult to establish the
underground
divide of Akiyoshi-dai Plateau. The origin of the dissolved components
was
estimated by the self-consistent least squares method proposed by
TSURUMI
(1982). The contents of dissolved components for all spring waters
could be
explained only by mixing of two source waters : Iimestone origin (A)
and
non-limestone origin (B) (Table 3). The drainage basins were divided
into two
groups from the mixing ratio of each spring water. In the drainage
basins of
Kuroiwa, Ono, Narutaki and Sowa, groundwater mainly issues from the
limestone
area. The dissolved components may be supplied from Akiyoshi Limestone
(A) and
to some extent from a non-carbonate soil zone above
the
limestone (B). The quality of groundwaters in the other drainage basins
(Hirotani and Kanoide) is characterized by high contribution of the
source
water B. There are fairly large non-limestone areas in the basins. When
the
discharge of Kanoide drainage basin increases, the basin extends to a
non-limestone area being distributed in the northeastern part of
Akiyoshi-dai
Plateau. |
Naruhiko KASHIMA, Michio
KATO, Takuro HIRAOKA and Jiro TAKAHASHI
Discovery of
Speleo-minerals in Non-calcareous "Shirasu" Caves
of Southern Kyushu, Japan
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Four
speleo-minerals (gypsum,
taranakite, 12Å mineral and amorphous one) are identified in samples
obtained
in two non-calcareous typical "Shirasu" caves of southern Kyushu,
Japan, which have not been mineralogically investigated up to the
present. |
Motoji IKEYA and
Tosbikatsu MIKI
Principle of
Chemical ESR Dating for Organic Materials using Radical
Formation
|
A
method of electron spin
resonance (ESR) dating utilizing the chemical reaction of radical
formation in
organic materials is proposed as an auxiliary dating technique in
archaeology,
history and forensic medicine. A theoretical treatment of kinetic rate
equations is presented with an example of lipid peroxy radical
formation of
unsaturated fatty acids in a killed rabbit skin. The ambiguity in the
temperature assessment and variation in the environment are major
source of
errors in this chemical ESR dating as in all dating methods based on
chemical
reaction . |
Atsushi FUJII and
Nishinihon Cave Diving Researchers
Some Remarks towards
the Underwater Speleology in Japan
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For
the future advance of the
underwater speleology in Japan, its early history in Europe and
America, its
relationship to speleology and actual notices are introduced. |