CORAL REEF MAPPING WITH REMOTE SENSING DATA

利用遥感数据绘制珊瑚礁地图

• 批准号: 08680618
• 负责人: HASEGAWA Hitoshi
• 金额: $ 1.47万
• 依托单位: KOKUSHIKAN UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08680618/
• 关键词: CORAL REEF; REMOTE SENSING; SPECTRAL REFLECTANCE; サンゴ礁環境; Satellite imge map

The spectral reflectance was measured 23 kinds of object by dividing the wave length of 400nm-1050nm into 17 steps. These data were measured in the south eastern coast of the Ishigaki-Island, Okinawa Pref.using a portable spectro reflectometer. These objects were beach and lagoon sediments and terrigenous sediments, live and dead coral such as Acropora sp.and Poritessp., green algae, red algae and brown algae. The object measured both on the shore and the underwater from the sea surface. The outline of the result about measurement of spectral reflectance is as follows : Measures on shore live coral and dead coral can be distinguished, and green algae, red algae and brown algae can be mutually distinguished. However, it is difficult to distinguish both of them in case of being under water.However it is difficult to distinguish these in case of being under water. Because spectral reflectance is higher than algae and seagrasses, live and dead coral can be distinguished from there in water. And moreover, various sediments for instance, coral sand and terrigenous sediments can be distinguished by using spectral reflectance in water.

将400 nm-1050 nm波长分成17个步骤，测量了23种物体的光谱反射率。这些数据是用便携式光谱反射仪在冲绳县石垣岛东南海岸测量的。这些对象是海滩和泻湖沉积物和陆源沉积物，活的和死的珊瑚，如Acropora sp.和Poritessp.，绿藻，红藻和褐藻。该物体在岸上和从海面上测量水下。光谱反射率测量的结果概述如下：可以区分岸上活珊瑚和死珊瑚的措施，并可以区分绿藻、红藻和褐藻。然而，在水下很难区分这两者，但在水下很难区分它们。由于光谱反射率高于藻类和海草，因此可以从那里区分水中的活珊瑚和死珊瑚。此外，利用水中的光谱反射率可以区分不同的沉积物，如珊瑚砂和陆源沉积物。

项目成果

長谷川 均: "リモートセンシングによるサンゴ礁地域のモニタリング" 日本サンゴ礁学会誌演要旨集. 1. 57 (1997)

长谷川仁：“通过遥感监测珊瑚礁区域”日本珊瑚礁学会杂志摘要，1. 57 (1997)。

中村和郎: "日本の自然地域編「南の島々」" 岩波書店, 216 (1996)

中村一夫：“日本的自然区域：南部岛屿”岩波书店，216（1996）

HITOSHI HASEGAWA: "CORAL REEF MAPPING WITH REMOTE SENSING DATA" NIHON CHIRI GAKKAI HAPPYOU YOUSISYU. NO.53. 400-401 (1998)

长谷川仁 (HITOSHI HASEGAWA)：“利用遥感数据绘制珊瑚礁地图”NIHON CHIRI GAKKAI HAPPYOU YOUSISYU。

長谷川 均: "リモートセンシングによるサンゴ礁地域のモニタリング" 日本サンゴ礁学会講演要旨集. 1. 57 (1997)

Hitoshi Hasekawa：“利用遥感技术监测珊瑚礁区域”日本珊瑚礁协会摘要，1. 57 (1997)。

長谷川 均: "サンゴ礁環境衛星地図の作成(1)" 日本地理学会発表要旨集. 53. 400-401 (1998)

长谷川仁：“珊瑚礁环境卫星地图的制作（1）”日本地理学会摘要53. 400-401（1998）。