Seasonal Variation of Radon Daughters Concentrations in the Atmosphere and in Precipitation at the Japanese Coast of the Sea of Japan

Abstract The atmospheric radon daughters concentration at Fukui in the Japanese coastal region of the Sea of Japan shows a seasonal variation whose high values appear in summer and low values in winter. On the other hand, the radon daughters concentration in precipitation at Fukui and that in the maritime atmosphere over the Sea of Japan are high in winter and low in summer. It is concluded from these phenomena that the greater part of the continental radon and its daughters are transported by seasonal winds from Siberia and China to Japan across the Sea of Japan in winter. However, when the air masses approach the shore, the cumulonimbus grows and the heavy snowfall scavenges out the radon daughters from the air masses in large quantities at the Japanese coastal region of the Sea of Japan.

Download Full-text

Seasonal variation of cloud-to-ground lightning flash characteristics in the coastal area of the Sea of Japan

Journal of Geophysical Research Atmospheres ◽

10.1029/jd094id11p13207 ◽

1989 ◽

Vol 94 (D11) ◽

pp. 13207 ◽

Cited By ~ 43

Author(s):

J. Hojo ◽

M. Ishii ◽

T. Kawamura ◽

F. Suzuki ◽

H. Komuro ◽

...

Keyword(s):

Seasonal Variation ◽

Sea Of Japan ◽

Coastal Area ◽

The Sea Of Japan ◽

Lightning Flash ◽

Cloud To Ground Lightning

Download Full-text

Seasonal variation in the 228Ra/226Ra ratio of coastal water within the Sea of Japan: Implications for the origin and circulation patterns of the Tsushima Coastal Branch Current

Marine Chemistry ◽

10.1016/j.marchem.2007.08.003 ◽

2007 ◽

Vol 107 (4) ◽

pp. 559-568 ◽

Cited By ~ 23

Author(s):

M. Inoue ◽

K. Tanaka ◽

H. Kofuji ◽

Y. Nakano ◽

K. Komura

Keyword(s):

Seasonal Variation ◽

Sea Of Japan ◽

Coastal Water ◽

The Sea Of Japan ◽

Circulation Patterns

Download Full-text

Experimental studies of seasonal variation for temperature fields on the Sea of Japan shelf by acoustical methods

Acoustical Physics ◽

10.1134/s1063771010020119 ◽

2010 ◽

Vol 56 (2) ◽

pp. 194-195 ◽

Cited By ~ 2

Author(s):

V. A. Akulichev ◽

Yu. N. Morgunov ◽

D. S. Strobykin

Keyword(s):

Seasonal Variation ◽

Sea Of Japan ◽

Experimental Studies ◽

Temperature Fields ◽

The Sea Of Japan

Download Full-text

Seasonal variation of methanesulfonic acid in the atmosphere over the oki islands in the sea of ] Japan

Atmospheric Environment ◽

10.1016/1352-2310(95)00057-6 ◽

1995 ◽

Vol 29 (14) ◽

pp. 1637-1648 ◽

Cited By ~ 24

Author(s):

H MUKAI ◽

Y YOKOUCHI ◽

M SUZUKI

Keyword(s):

Seasonal Variation ◽

Sea Of Japan ◽

Methanesulfonic Acid ◽

The Sea Of Japan

Download Full-text

Two new species of the genus Caligus (Crustacea, Copepoda, Siphonostomatoida) from the Sea of Japan, with a note on the establishment of a new species group

ZooKeys ◽

10.3897/zookeys.893.46923 ◽

2019 ◽

Vol 893 ◽

pp. 91-113 ◽

Cited By ~ 3

Author(s):

Susumu Ohtsuka ◽

Geoffrey A. Boxshall

Keyword(s):

New Species ◽

Sea Of Japan ◽

Distinct Species ◽

Species Group ◽

The Body ◽

Plankton Sample ◽

The Sea Of Japan ◽

Male Specimen ◽

Japanese Coast ◽

Two New Species

Two new species of Caligus are described from the Japanese coast of the Sea of Japan. Caligus chinglonglinisp. nov. is based on a male specimen found in a plankton sample, whereas C. kajiisp. nov. was collected from the body surface of the host flathead Platycephalus sp. These two new species can be assigned to a distinct species group, the pseudorhombi group newly named and defined by the morphology of the genital complex in both sexes, and by the structure and armature of legs 2 and 4. The species group so far accommodates 19 species including these two new species. The morphology, host specificity and zoogeography of the species group are discussed herein and keys to species groups of Caligus and to species of the C. pseudorhombi species group are provided.

Download Full-text