General study on Surveying Technology and the Standard in Ancient Japan
| Project/Area Number |
15H03264
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Archaeology
|
|---|
| Research Institution | Mie University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2015-04-01 – 2020-03-31
|
| Project Status |
Completed (Fiscal Year 2019)
|
| Budget Amount *help |
¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2015: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
|
|---|
| Keywords | 考古学 / 歴史考古学 / 測量 / 尺度 |
|---|
| Outline of Final Research Achievements |
By examining how the orientation of large-scale structures in ancient Japan was determined, I found it was not the measurement of magnetic north or the true north using circumpolar stars and polaris, but the measurement of the true east-west direction using the sun. Comparing Fujiwara and Nara capital, the linearity of both roads is fairly good, and there is almost no difference. On the other hand, the accuracy of right-angled drawing at Fujiwara capital is low, which suggests that there was a leap in surveying technology between the two capitals. The large scale and the small scale specified by Taiho Codes correspond to Koguryo scale and the large scale of Tang in order. Koguryo scale probably derived from the back side of the scale of Southern Dynasty in China.
|
| Academic Significance and Societal Importance of the Research Achievements |
日本古代の方位測定法については誤解が多く、方位磁針や北極星による測定とみる説も散見する。ところが、当時の磁北の偏角（真北からの振れ）は現在より大きく、北極星にあたる星も存在しなかった。太陽による真東西の測定と明示した本研究の意義は大きい。また、藤原京と平城京の間で技術的な飛躍があり、そこで測量技術は一定の水準に達していたことも判明した。このほか、由来をめぐり諸説があった高麗尺を南朝尺の裏目とした点も特筆される。
|
Report
(6 results)
Research Products
(31 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] 古代の測量と都づくり2016
Author(s)
小澤 毅
Organizer
広島県立博物館公開講演会
Place of Presentation
広島県立博物館（広島県福山市）
Year and Date
2016-01-30
Related Report
Invited
-
-
[Book] 奈良の都、平城宮の謎を探る2020
Author(s)
奈良文化財研究所編、内田和伸、今井晃樹ほか
Total Pages
182
Publisher
独立行政法人国立文化財機構奈良文化財研究所
ISBN
9784909931313
Related Report
-
[Book] 古代寺院史の研究2019
Author(s)
菱田哲郎・吉川真司編、大脇潔、小澤毅ほか
Total Pages
512
Publisher
思文閣出版
ISBN
9784784219681
Related Report
-
