All issues
Volume 36 (1997)
- Issue 6 Pages 1-
- Issue 5 Pages 1-
- Issue 4 Pages 1-
- Issue 3 Pages 1-
- Issue 2 Pages 1-
- Issue 1 Pages 1-
Predecessor
Volume 36, Issue 6
Displaying 1-13 of 13 articles from this issue
- |<
- <
- 1
- >
- >|
-
[in Japanese]1997 Volume 36 Issue 6 Pages 1
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (1969K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...1997 Volume 36 Issue 6 Pages 2-3
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (1942K) -
Hiroyuki OGUMA, Yoshiki YAMAGATA1997 Volume 36 Issue 6 Pages 4-12
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSWetlands is one most valuable ecosystems on the earth. Also today the importance of wetland is pointed out as a major emission source of methane which is one of the green house gases.
The development of remote sensing method to monitor wetlands vegetation distribution is urgent necessity. The purpose of this study is to investigate remote sensing methodology for monitoring wetland vegetation distribution by utilizing Synthetic Aperture Radar data. Vegetation classification was performed with multi-temporal JERS-1/SAR (L band) and ERS-1/AMI (C band) images. As initial step for classification, the speckle noise reduction was performed by MAP filter. As the result of supervised classification by Maximum likelihood method, an accurate wetland vegetation classification map was produced.View full abstractDownload PDF (4943K) -
Shuzo TANAKA, Tetsuro ISHIDA, Tosifumi YAMASAKI, Takamichi TANAKA1997 Volume 36 Issue 6 Pages 13-20
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSPort-island is offshore artificial island of 436 hectare area which has both functions of a harbor and a city. The new city planning which surrounded residential area in a public institution has been done. Residential area is constituted in high altitude condominium and many community institutions of citizen hospital, international convention facility, international exhibition building is built as surrounding a condominium group.
Kobe city received the big damage by South Hyogo earthquake that occurred at 5: 46 am on January 17, 1995. The people who can't get information of outside by the damage of life line and liquefaction damage spent an anxious few days. Our country is narrow, we need to continue construction of artificial island as utilization the space. So it is important to compare an amount of subsidence of building and ground of before and after an earthquake disaster.
This paper describes liquefaction damage of Port-island using observation result of leveling and satellite imageView full abstractDownload PDF (4566K) -
Hirofumi CHIKATSU, Tetsuji ANAI1997 Volume 36 Issue 6 Pages 21-30
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSThe effectiveness of the real-time ortho projection and drawing system using a CCD camera and line lasers developed by the authors has been demonstrated. However, 3 dimensional visualization for archeological artifacts, such as surface model or texture model should be performed.
There are some methods for performing a digital 3D modeling such as the range finder method. The most remarkable point of this system is its ability to get a real-time ortho projection image and a 3 dimensional model with one CCD camera.View full abstractDownload PDF (11714K) -
Hiroshi MURAKAMI, Toshihiro TSUTSUI, Taku SHIBATA, Eiji IWANAMI1997 Volume 36 Issue 6 Pages 31-40
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSThe necessity of maximizing urban space has been fueling studies on three-dimensional (3D) geographic information systems (GIS) . Yet 3D data acquisition still relies on conventional, labor-intensive and costly photogrammetric techniques, and the data often suffers from being out-dated. This study investigates the potential of an airborne scanning laser radar system for 3D data acquisition and change detection of a 3D GIS database. Although attitude control of the helicopter still needs significant improvement for practical applications, the system proved to have the potential capability of automatically acquiring 3D information and detecting changes of 3D urban features.View full abstractDownload PDF (14123K) -
Toshibumi SAKATA, Masahiro ETAYA, Sakuji YOSHIMURA, Jiro KONDO, So HAS ...1997 Volume 36 Issue 6 Pages 41-53
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSPreviously unknown ancient remains were detected in the Memphite necropolis of Egypt by the analysis of satellite data. As one of the result, a brick architecture with a small pyramid of the new kingdom was discovered at Dahshur which is some 20km south from Giza. It was the first discovery in Egypt using this new method. This study is being done in cooperation with Tokai University Research & Information Center and The Egyptian Culture Center of Waseda University.
The main purpose of this study is to detect undiscovered pyramids in Egypt with the aid of satellite remote sensing technology and ecological analysis of the Egyptian dynastic period. Satellite remote sensing technology is expected to be a powerful tool for a wide range observation in the field of archaeological study. Multiple satellite data, i. e., Landsat-TM, SPOT-PAN, SPOT-XS, KVR-1000, JERS 1-SAR, EERS 1-SAR and maps based on archaeological research, were used for this study. The discovery of the remains was made in the process of the study. The result of this study clearly shows that satellite remote sensing technology is a very useful in archaeological observation.View full abstractDownload PDF (25610K) -
—Taking a Case of L-band SAR Imaging of the Northern Yucatan Peninsula—Takeo SUZUKI, Haruto HIROSAWA1997 Volume 36 Issue 6 Pages 54-62
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSThis paper describes an algorithm for deriving line features generated by roads in forests from L-band synthetic aperture radar (SAR) images. The algorithm traces connected dark pixels successively, while avoiding meaning-less linear features generated by speckle and connecting interruptions in dark line features due to bright back-scattering from trees. The algorithm has been applied to L-band SAR images of the northern Yucatan Peninsula where a substantial amount of roads of the Maya Age are known to exist, and has operated satisfactorily.View full abstractDownload PDF (8606K) -
Ryutaro TATEISHI, You KUROSAWA1997 Volume 36 Issue 6 Pages 63-71
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSIn recent year, we can easily measure three dimensional location at a certain point using a GPS (Global Positioning System) instrument. Generally we can use the some way for positioning, point positioning, DGPS (Differential GPS) and GPS surveyer. It is said that accuracy by point positioning is about 100 meters, DGPS is 3 meters and GPS surveyer is 1 cm. DGPS and GPS surveyer get high accuracy by means of two GPS instruments. One of them are set on known point and the other, observed point. Both of them must be observed at same time. But, when we use a GPS instrument in undeveloped region, it is difficult to determine known point and observe at same time. Therefore, it is important to examine real accuracy of point positioning. We inspected accuracy of point positioning using GPS instruments produced in some companies.View full abstractDownload PDF (966K) -
Satoru KOJIMA, Norihisa KAMIBAYASHI, Yoshio AWAYA1997 Volume 36 Issue 6 Pages 72-78
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSMagnitudes and extent of forest decline due to industrial pollution in Monchegorsk on the Kola Peninsula, Russia, were assessed by Landsat data and ground observation. A total of 1, 098 km2 was identified to be affected. The area was classified into three damage classes. i. e., light, medium, and heavy, and their areal extents were estimated to be 865 km2, 147 km2 and 86 km2, respectively. Economical loss due to the decline was evaluated. Potential annual total loss of wood increment amounted to be 81, 000 m3 for the entire area and its commercial value was estimated to be 8.1 million US dollars. Wild berry production of 3, 300 ton/year was also lost, which would worth 16.5 million US dollars approximately. Loss of ecological functions of the forest ecosystems was immeasurable. Such economical and ecological losses would last “forever” from our perception of time. This was totally contradictory to the notion of sustainable resource use with which the whole world was so much concerned.View full abstractDownload PDF (3879K) -
[in Japanese]1997 Volume 36 Issue 6 Pages 79-80
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (1507K) -
[in Japanese]1997 Volume 36 Issue 6 Pages 83-84
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (2045K) -
[in Japanese]1997 Volume 36 Issue 6 Pages 85-87
Published: December 25, 1997
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (4105K)
- |<
- <
- 1
- >
- >|