منابع مشابه
Tectonics of the Kyushu-ryukyu Arc as Evidenced from Seismicity and Focal Mechanism of Shallow to Inter- Mediate-depth Earthquakes
Tectonic features of the Kyushu-Ryukyu arc have been investigated in detail, on the basis of seismicity and focal mechanism of shallow to intermediatedepth earthquakes with magnitudes around and greater than 5.0. All shallow earthquakes in the Hyuga-nada region east of Kyushu are characterized by low-angled thrust faulting, which may be directly related to the underthrusting of the Philippine S...
متن کاملLarge-scale slope failure and active erosion occurring in the southwest Ryukyu fore-arc area
The southwestern Ryukyu area east of Taiwan Island is an arcuate boundary between Philippine Sea Plate and Eurasian Plate. The topographic features in the area are characterised by (1) a large-scale amphitheatre off Ishigaki Island, just on the estimated epicentre of the tsunamigenic earthquake in 1771, (2) lots of deep sea canyons located north of the amphitheatre, (3) 15–20 km wide fore-arc b...
متن کاملReproductive traits of the Ryukyu long-furred rat (Diplothrix legata) on Okinawa-jima Island
The Ryukyu long-furred rat, Diplothrix legata, is a large rodent distributed only on Amami-ohshima Island, Tokuno-shima Island and Okinawa-jima Island, Japan. This animal is endangered as a result of deforestation, predation by introduced carnivores and mortality caused by vehicles. We performed theriogenological examinations of 32 male and 25 female Ryukyu long-furred rats carcasses collected ...
متن کاملTectonic Evolution of the Japanese Island Arc System
■ Abstract Growth of the Japanese arc system, which has mainly taken place along the continental margin of Asia since the Permian, is the result of subduction of the ancient Pacific ocean floor. Backarc basin formation in the Tertiary shaped the presentday arc configuration. The neotectonic regime, which is characterized by strong eastwest compression, has been triggered by the eastward motion ...
متن کاملMelt inclusions from Marianas arc lavas: implications for the composition and formation of island arc magmas
We have measured the major and trace element compositions of a suite of olivine-hosted melt inclusions in basaltic lavas from the islands of Agrigan and Guguan (one sample each) from the Mariana arc, part of the larger Izu–Bonin–Mariana system. The two lava samples examined show distinctly different chemical signatures that are considered to represent the dominance of sediment melt (Agrigan) or...
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ژورنال
عنوان ژورنال: Journal of Physics of the Earth
سال: 1978
ISSN: 1884-2305,0022-3743
DOI: 10.4294/jpe1952.26.supplement_s301