Abstract
Using all available geomagnetic data, including those obtained in a detailed survey conducted by the authors in 1970, the geomagnetic anomaly pattern if the Japan Sea has been studied. It has been established that sublinear magnetic anomalies run subparallel to the general trend of the Japanese Islands. The peak to peak amplitudes of most of these anomalies are less than 300y, their wavelengths 20 to 40 km. The anomalies are much less distinct in linearity than those found in the northwestern corner of the Pacific basin off northeastern Honshu. The linear trend is better developed in the deeper basin areas and less recognizable in the Yamato- and Kitayamato-areas. The anomaly pattern appears to support the view that the Japan Sea floor evolved through a spreading process from numerous spreading centers. A definite conclusion about the genesis of the Japan Sea, however, must await further investigation.
Similar content being viewed by others
References
AbeK. and KanamoriH.: 1970, ‘Mantle Structure beneath the Japan Sea as Revealed by Surface Waves’, Bull. Earthq. Res. Inst. Univ. Tokyo 48, 1011–1021.
CainJ. C., HendricksS. J., LangelR. A., and HudsonW. V.: 1967, ‘A Proposed Model for the International Geomagnetic Reference Field-1965’, Geomag. Geoelectr. Kyoto 19, 335–355.
HasebeK., FujiiN., and UyedaS.: 1970, ‘Thermal Processes under Island Ares’, Tectonophysics 10 (1–3), 335–355.
Hilde, T. W. C. and Wageman, J. M.: 1971, ‘Structure and Origin of the Japan Sea’, Proc. 12th Pacific Sci. Congr., Canberra.
IAGA Commission 2 Working Group No. 4: 1969, ‘Analysis of the Geomagnetic Reference Field, The International Geomagnetic Reference Field’, J. Geomagnet. Geoelectr., Kyoto 21, 569–571.
IsezakiN., HataK., and UyedaS.: 1971, ‘Magnetic Survey of the Japan Sea (part 1)’, Bull. Earthq. Res. Inst. Univ. Tokyo 49, 77–83.
Isezaki, N.: 1971, ‘Geomagnetic Anomalies and Tectonics around Japanese Islands’, Thesis, University of Tokyo.
LudwigW. J., EwingJ. I., EwingM., MurauchiS., DenN., AsanoS., HottaH., HayakawaM., AsanumaT., IchikawaK., and NoguchiI.: 1966, ‘Sediments and Structure of the Japan Trench’, J. Geophys. Res. 71, 2121–2137.
MarshallM.: 1972, ‘Magnetism of Basalt from JOIDES Legs 6 and 7’, EOS 54, 126.
MatsudaT. and UyedaS.: 1971, ‘On the Pacific-type Orogeny and its Model-Extension of the Paired Belts Concept and Possible Origin of Marginal Seas’, Tectonophysics 11, 5–27.
MatsuzakiT.: 1966, ‘Magnetic Anomalies over and around the Japan Trench off Sanriku and the Yamato Bank in the Japan Sea’, Report of Hydrographic Res. 1, 1–10.
OzimaM., KaneokaI., and AramakiS.: 1970, ‘K Ar Ages of Submarine Basalts Dredged from Seamounts in the Western Pacific Area and Discussion of Oceanic Crust’, Earth Plametary Sci. Letters 8, 237–249.
Preliminary Report of Hakuho Maru Cruise KH-68-3, (ed. by Y. Tamodo): 1970, Ocean Research Institute, The University of Tokyo.
Preliminary Report of Hakuho Maru Cruise KH-69-2, (ed. by Y. Tomoda and N. Nasu): 1971, Ocean Research Institute, The University of Tokyo.
RikitakeT., MiyamuraS., TsubokawaI., MurauchiS., UyedaS., KunoH., and GoraiM.: 1965, ‘Geophysical and Geological Data in and around the Japan Arc’, Can. J. Earth Sci. 150, 485–489.
UdintsevG. B., AgapovaG. V., BeresnevA. F., BoundanovaL. Ya., ZatonskiyL. K., ZenkevichN. L., IwanovA. G., KanaievV. F., KoutcherovI. P., LarinaN. I., MineievV., and RauskiyE. I.: 1963, ‘The Bathymetric Map of the Pacific’, Oceanographical Mag., (X Section of the IGY Program) 9, 60–101.
Uyeda, S. and Miyashiro, A.: 1973, ‘Plate Tectonics and Japanese Islands’, Bull. Geol. Soc. Am. (in press).
UyedaS. and RichardsM.: 1966, ‘Magnetization of Four Pacific Seamounts Near the Japanese Islands’, Bull. Earthq. Res. Inst. Univ. Tokyo 44, 179–213.
UyedaS., YasuiM., SclaterJ., SatoT., LawsonJ., WatanabeT., DixonF., SilverE., FukaoY., SudoK., NishikawaM., and TanakaT.: 1967, ‘Results of Geomagnetic Survey during the Cruise of R/V Argo in Western Pacific 1966 and Compilation of Magnetic Charts of the Same Area’, Bull. Earthq. Res. Inst. 45, 799–814.
VineF. J. and WilsonJ. T.: (1965) ‘Magnetic Anomalies over a Young Oceanic Ridge off Vancouver Island’, Science 150, 485–489.
Watanabe, T.: 1968, ‘Thermal Cross Section of Continental Margin’, in Proc. Conductivity Anomaly Symposium (ed. by S. Uyeda), 167–182 (in Japanese).
YasuiM., HashimotoY., and UyedaS.: 1967, ‘Geomagnetic Studies of the Japan Sea—Anomaly Pattern in the Japan Sea’, Oceanographical Mag. 19, 221–231.
Yasui, M., Kishii, T., Watanabe, T., and Uyeda, S.: 1968, ‘Heat flow in the Sea of Japan’ in Crust and Upper Mantle of the Pacific Area, L. Knopoff, C. Drake, and P. Hart (eds.), Geophys. Monogr. 12, 3–16.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Isezaki, N., Uyeda, S. Geomagnetic anomaly pattern of the Japan Sea. Mar Geophys Res 2, 51–59 (1973). https://doi.org/10.1007/BF00451870
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00451870