Hokkaido Weather Forecast

September 2011 Geology highlights: New research posted Aug. 5

Highlights from the September issue of GEOLOGY , which is now online, include debris flow hazard assessment; dune migration in the "greatest desert on Earth": Antarctica; Luizi, the first confirmed meteorite impact structure in Central Africa; a determination of the likelihood that fungal disease had accelerated latest Permian woodland deterioration; the first comprehensive compilation of sedimentary and historical records of ash-fall events in northern Europe; and high-speed video of ash fall from the 2010 Eyjafjallajökull eruption.

Keywords: Mariana arc, New Caledonia, autogenic processes, Zagros fold belt, subducting seamounts, Roanoke River, debris flows, Antarctica, McMurdo Dry Valleys, Bering plate, Yellow River, fluvial terraces, Upper Rhine Graben, serpentinite, Luizi impact structure, Democratic Republic of Congo; Canary archipelago, Henry Seamount, Coats Land, Laurentia, mafic magma, Jakobshavn Glacier, Flinders Ranges, South Australia, Asian Monsoon system, Llanfawr Mudstones Lagerstaette, Rhizoctonia, Reduviasporonites, northern Europe, volcanic ash, Eyjafjallajökull

Highlights are provided below. Representatives of the media may obtain complimentary copies of GEOLOGY articles by contacting Christa Stratton at the address above. Abstracts for the complete issue of GEOLOGY are available at http://geology.gsapubs.org/ .

Please discuss articles of interest with the authors before publishing stories on their work, and please make reference to GEOLOGY in articles published. Contact Christa Stratton for additional information or assistance.

Non-media requests for articles may be directed to GSA Sales and Service, gsaservice@geosociety.org .

High SO2 flux, sulfur accumulation, and gas fractionation at an erupting submarine volcano

David A. Butterfield et al., University of Washington, Joint Institute for the Study of the Atmosphere and Ocean (JISAO), Box 354925, Seattle, Washington 98195, USA; doi: 10.1130/G31901.1.

Volcanic eruptions in the deep ocean have been directly observed on very few occasions. NW Rota-1 submarine volcano in the Mariana arc has been erupting slowly and persistently since it was first observed with a remotely operated vehicle in 2004. The processes of magma degassing, acidic alteration of volcanic rock, and formation of elemental sulfur have been captured. High concentrations of sulfur dioxide have been measured in hydrothermal solutions for the first time by David A. Butterfield of the University of Washington and colleagues. The chemistry of submarine volcanic arc hydrothermal systems is influenced by the high volatile content and slightly oxidized nature of magmas produced on volcanic arcs as compared to mid-ocean ridge systems. Highly acidic fluids produced during submarine eruptions on volcanic arcs may have a significant impact on the chemical balance of the oceans, notably for sulfur and aluminum.

suzukiyoshimasa - 2011/8/01

2:36, an earthquake. Low.
The epicenter of the earthquake off the coast of Urakawa, Hokkaido. Depth of 40 km.
Erimo erimomisaki, 4 intensity. Magnitude of 5.4.

10:44 p.m., an earthquake. Low.
The epicenter of the earthquake off the coast of Iwate Prefecture. Depth of 50 km.
Hashikami Dobutsu, 4 intensity. Magnitude of 5.7.

11:58 p.m., an earthquake. Low.
The epicenter of the Suruga Bay, Shizuoka Prefecture. Depth of 20 km. Magnitude of 6.1.
Higashiizu naramoto, honmachi Yaizu, Shizuoka Suruga magarikane, intensity 5 lower.
Shizuoka Prefecture, Tokyo Izu island chain Niijima, Kanagawa Prefecture, Yamanashi Prefecture, Nagano Prefecture, the intensity 4.

Lower intensity - a current, a afterquake of 142 days.
The magnitude of the quake, of magnitude 3.2 to 5.7 magnitude. The maximum seismic intensity of the zone of aftershocks of intensity 4.

Today, cloudy. Cloudy day. Breeze.
Currently, 23.30, cloudy. Breeze.
Weather forecasts,
Tomorrow, cloudy. Maximum temperature of the day, 26 degrees Celsius.

Nuclear power plant disaster. Remain in a dangerous situation. Fukushima Daiichi plant.
143 days, a nuclear power plant disaster.

Cold Front Passing Hokkaido

Snow removal and ice control technology, selected papers presented at Fourth International Symposium, Reno, Nevada, August 11-16, 1996

The Oceanographical magazine

Japan socialist review

Japan Volume 1