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1.
Jun Hashimoto Suguru Ohta Katsunori Fujikura Yoshihiro Fujiwara Shunji Sukizaki 《Journal of Oceanography》1995,51(3):341-350
In and around the beds of vesicomyid clam (Calytogena soyoae) located off Hatsushima Island in Sagami Bay, central Japan, hydrogen sulfide concentration in bottom water and interstitial water was measured every 10 cm from just above seafloor to 40 cm deep usingin situ separative dialysis bags. While hydrogen sulfide over 0.01 mmol/kg was not measured from the seawater just above the dense clam beds, the concentration of hydrogen sulfide increased rapidly below 10 cm deep. The results indicate that the habit of the clam is correlated with high concentration of hydrogen sulfide contained in pore waters of sediments between depths of 10 and 20 cm from the bottom surface. Concentrations of hydrogen sulfide ranging from approximately 0.05 mmol/kg to 0.6 mmol/kg might be suitable requirement for the habitat ofC. soyoae. 相似文献
2.
The M=7.2 southern Hyogo prefecture earthquake, which occurred on January 17, 1995, destroyed the region severely. Further researches
are necessary to explain the problems obtained from this earthquake. We have discussed some characteristics correlating with
this earthquake, such as distribution of aftershocks and disaster, relationship between fault and generation of inland shallow
earthquakes, strong motion and so on. The tectonic movements of surface faults may be different from those of deep faults.
Earthquakes may not be restricted directly by the tectonic movements of surface faults. The strong motion zone is often appeared
in the region a little away from the both ends or from the single side of a fault instead of the region of a focal fault.
Some mechanisms of strong motion have also been discussed. 相似文献
3.
Shunji Murai 《地球空间信息科学学报》2021,24(1):8-12
Preface
I am pleased to contribute an article to GSIS to com-memorate the great achievements of Prof.Dr.Gottfried Konecny on the occasion of the celebration of his 90th birthday.
I was lucky to work closely with Gottfried as an ISPRS Council member for the first time in 1984 in Rio de Janeiro,Brazil,when I was elected as Congress Director of the Kyoto ISPRS Congress to be held in 1988.Gottfried was elected as ISPRS President for 1984~1988.At the first Council meeting under the President Gottfried,he said to all Council members"as we are like a family,I request that we address each other by our first names".If he had not said this,I might have called him Professor Konecny,according to Japanese custom. 相似文献
4.
Remote sensing activities in Japan are reviewed under three sectors; the government, private and universities. International activities are also reviewed. The largest governmental activity is the launch of earth observation satellite by National Space Development Agency (NASDA). Apart from that, remote sensing technology is utilized in many government research institutes. The first level activities in private companies are research, design and development of rockets, spacecrafts, sensors and receiving stations which are carried out by five big electronic companies. Aerial survey companies and oil exploration companies are presently utilizing technology of remote sensing. University professors are bearing the responsibility for research and education as well as advising the government and private companies. 相似文献
5.
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7.
Shunji Ouchi 《地球表面变化过程与地形》2021,46(5):1083-1095
Four runs of experimental landform development, with the same uplift rate, different rainfall intensity, and the same material of different permeability adjusted by the degree of compaction, showed complicated effects of rainfall and mound-forming material. In the run with more rainfall on less permeable material, low separated ridges developed in the uplifted area, because abundant overland flow promoted valley erosion and slope processes from early stages. In the run with less rainfall on less permeable material, valley incision proceeded mostly in major valleys where surface water converges. Canyons developed during early stages and later a high massive mountain emerged. The effect of rainfall difference, however, appeared completely opposite on more permeable material accompanied by lower shear strength. In the run with more rainfall on more permeable material, a massive mountain similar to that with less rainfall on less permeable material appeared, and low separated ridges appeared in the run with less rainfall on more permeable material as in the run with more rainfall on less permeable material. In the former case, similar amount of water available for Hortonian overland flow in early stages estimated from rainfall rate and permeability can explain the development of similar landforms. In the latter case, while abundant surface water with more rainfall on less permeable material made fluvial erosion active from early stages, the deficiency in surface water with less rainfall on more permeable material apparently attenuated fluvial erosion but possibly accentuated slope processes and slope failures by seepage water flow through more permeable material of low shear strength. The active erosion from early stages apparently resulted in the development of enduring similar low landforms later in the dynamic equilibrium stage. These experimental results indicate that similar landforms can emerge from different environmental and lithologic controls, and that process does not necessarily follow from form. 相似文献
8.
Kentaro Terada Hitoshi Negoro Kiyoshi Hayashida Shunji Kitamoto Hiroshi Tsunemi Hiroshi Oya Takayuki Ono Akira Morioka Yuzuru Tawara Toshifumi Mukai Masahiro Hoshino Toshio Terasawa 《Earth, Moon, and Planets》1994,66(1):75-81
An ASCA observation of the Jovian impact of the comet Shoemaker-Levy 9 is reported. Four impacts of H, L, Q1 and R were observed and four impacts of B, C, G, and Q2 were observed within 60 minutes after their impacts. No significant flaring of X-ray emission was observed. Upper limit X-ray fluxes of 90 % confidence level, averaged 5 minutes just after the impacts, were 2.4 × 10–13 erg sec–1 cm–2, 3.5 × 10–13 erg sec–1 cm–2, 1.6 × 10–13 erg sec–1 cm–2 and 2.9 × 10–13 erg sec–1 cm–2 for the impacts of H, L, Q1 and R, respectively, in the 0.5(0.7 for H and Q1)–10 keV energy range. However, a hint of X-ray enhancement around Jupiter from July 17 to July 19 was detected with about 2 6 × 10–14 erg sec–1 cm–2 in the 0.5–10 keV energy range. 相似文献
9.
Toru OuchiDepartment of Earth Sciences Faculty of Science Kobe University Kobe Japan 《地震学报(英文版)》1997,(6)
ThebvaluespectrumandηvaluebythemomentmethodToruOuchi(大内)DepartmentofEarthSciences,FacultyofScience,KobeUniversity,Kobe,657,... 相似文献
10.
Tetsuo Yanagi Suhendar I Sachoemar Toshiyuki Takao Shunji Fujiwara 《Journal of Oceanography》2001,57(4):461-470
Intensive hydrographic observations were carried out in the western part of the Gulf of Thailand and the east coastal sea
of Peninsular Malaysia in September 1995 and April–May 1996. The characteristics of seasonal variation of oceanic condition
in that area are discussed basis of an analysis of observed water temperature, salinity and density distributions in these
cruises and NAGA cruises (Yanagi and Takao, 1998a). Stratification is most developed in March–May mainly due to large sea
surface heating and weak sea surface wind, which weakened until September–October, vanishing in December–January. The horizontal
distribution of bottom cold, saline and heavy water masses, which are found during the stratified season, is governed by the
tidal mixing and the water depth. Water exchange between the Gulf of Thailand and the South China Sea becomes large in March–May
due to a coupled effect of the intensified estuarine circulation and the Ekman transport by the southwest monsoon.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献