[논문]동해안 해변의 자외선 반사량의 원격탐사

어재선; 최철재

doi:10.13067/jkiecs.2020.15.4.733

동해안 해변의 자외선 반사량의 원격탐사
Remote Sensing of the Ultraviolet Reflectance on the East Coast Beach 원문보기

한국전자통신학회 논문지 = The Journal of the Korea Institute of Electronic Communication Sciences, v.15 no.4, 2020년, pp.733 - 738

어재선 (경동대학교 해양심층수학과) , 최철재 (경동대학교 소프트웨어학과)

초록
AI-Helper

최근에는 연안 지역의 개발이 진행됨에 따라 해변 근처에서 레저 활동을 하고 있는 사람들이 증가 하고 있다. 하지만, 오존층의 파괴로 지표면에 도달하는 자외선의 양은 증가하였다. 인체는 자외선에 의한 피부암과 눈 손상 등으로 유해한 영양을 받는다. 특히, 해변에서 자외선의 영향은 모래 표면으로 부터의 반사로 인해 내륙 지역보다 높다. 본 연구는 원격탐사를 이용한 동해안 해변의 자외선 반사 측정 방법의 기초자료로 활용할 수 있을 것으로 기대된다.

Abstract ▼ AI-Helper

In the recent years, the development of coastal zone has been advancing, and the chance of leisure activity has increased near the sea. However, the destruction of ozone layer has resulted in an increase in the amount of ultraviolet radiation reaching the earth surface. The human body is harmfully influenced as skin cancer and eye damage by ultraviolet radiation. Especially, the effect of ultraviolet radiation on beach is higher than that inland area due to the reflection from the sand. This study is expected to use basic data on the method of measuring ultraviolet reflections on east coast beaches using remote sensing.

주제어

표/그림 (15)

그림 Fig. 1 Map showing measurement area Goseong Cheonjin, Bongpo Beach and Sokcho Beach
표 Table 1. Reflectivity of each beach sand in different countries
그림 Fig. 2 Beach sand collection point for real data (Cheonjin Beach)
그림 Fig. 3 Beach sand collection point for real data (Sokcho Beach)
그림 Fig. 4 Relationship between gradation and band 2 visible reflectance
표 Table 2. Reflectivity of each beach sand in the wavelength range
그림 Fig. 5 Relationship between band 2 visible reflectance and reflectance
그림 Fig. 6 Outline map of Beach measuring point
그림 Fig. 7 Outline map of Sokcho Beach measuring point
그림 Fig. 8 Beach measuring points image
표 Table 3. Comparison of UV reflectance between field samples and image samples
그림 Fig. 9 UV-A,B reflectance of the A-A'section
그림 Fig. 10 UV-A,B reflectance of the B-B'section
그림 Fig. 11 UV-A,B reflectance of the C-C'section
표 Table 4. Change in UV reflectance at the measurement point

AI 본문요약
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문제 정의

Although remote sensing[7-10] using ultraviolet radiation was also proposed, it is difficult to measure the UV reflectance accurately because atmospheric scattering is large and complex atmospheric correction can not be accurately measured. Therefore, this study aimed to measure the UV reflectance on the beach over a wide range using the short-wavelength visible light image data obtained from a satellite taking advantage of the fact that the reflectance of visible lights is highly correlated with the reflectance of ultraviolet radiations.

제안 방법

In this study, the UV reflectance of beach sand in a wide range could be measured using image data, taking advantage of the fact that the reflectance of visible lights is highly correlated with the reflectance of ultraviolet radiations. In addition, the average UV reflectance at Cheonjin beach, Bongpo beach, and Sokcho beach on the East Coast could be expected to vary in a range of 13.
5% in the case of UV-B. The results of this study can predict UV exposure on the East Coast beach. Also, by measuring UV exposure in other coastal areas (west coast, south coast), We are trying to complete the UV exposure road map across the country.

대상 데이터

The real data were obtained from Cheonjin beach in Goseong, Gangwon-do (east longitude 128° 33’ 37”, north latitude 37° 15’ 35”) and Sokcho bathing beach (east longitude 128° 36’ 13”, north latitude 38° 11’ 27”).
The satellite data used in this study are LANDSAT8 data obtained on May 7, 2020 at Cheonjin and Bongpo beaches in Goseong-gun, Gangwon-do, and Sokcho beach(bathing beach). Band 2 (450-510nm) image photographed in the wavelength range was used.

성능/효과

As for the average values, the UV-A UV reflectance in the case of Cheonjin beach (A-A ') and Bongpo beach (B-B') were similar at 13.1% and 13.6%, respectively, and the UV-B UV reflectance were similar at 10.2% and 10.6%, respectively.

참고문헌 (10)

M. Blumthaler and W. Ambach, "Solar UVB-albedo of Various Surfaces." Journal of Photochemistry and photobiology, vol. 48, no.1, 1988, pp. 85-88.
J. Uh and T. Kawanishi, "A Study Ultraviolet Spectral Reflectancet of Coastal Sands," J. of the Japan Institute, Architectural Institute of Japan, no. 516, 1999, pp. 167-172.
K. Ogata, J. Uh, and T. Kawanishi, "Ultraviolet reflection measurement by helicopter," Research Discussion Lecture Outline, Japanese Association for Coastal Zone Studies, vol. 9, 1996, pp. 50-51.
K. Ogata, J. Uh, T. Kawanishi, and K. Ogata "Ultraviolet reflectance measurement of beach using camera," J. of the Japan Institute, Architectural Institute of Japan, no. 511, 1998, pp. 157-162.
T. Kawanishi, J. Uh, K. Nagata, and A. Takatsuka, "Ultraviolet reflectance measurement of beach using camera." J. of the Japan Institute, Japanese Association for Coastal Zone Studies, no. 11, 1999, pp. 117-122.
T. Kawanishi and S. Iida, "Ultraviolet reflectance on sea surface," J. of the Japan Institute, Architectural Institute of Japan, no. 573, 2003, pp. 111-115.
A. Takeuchi, "Principle of remote sensing technology and application examples," Patent Office technical magazine, tokugikon of Japan, no. 289, 2018, pp. 182-191.
H. Kim, S. Jang, and H. Yoon, "Utilization of Unmanned Aerial Vehicle Image for Detection of Algal Bloom in Nakdong River," J. of the Korea Institute of Electronic Communication Science, vol. 12, no. 3, 2017, pp. 457-464.
M. Kim, B. Kwon, and H. Yoon, "Estimation of Surface Layer Heat Flux Using the UHF Sensor Installed on UAV," J. of the Korea Institute of Electronic Communication Science, vol. 13, no. 1, 2018, pp. 267-275.
C. Choi, H. Yoon, Y.Woo, J.Uh, and Y.Choi, "Suitability Selection on Habitable Environments of Corbicula Japonica in the Songji Lagoon by GIS," J. of the Korea Institute of Electronic Communication Science, vol. 10, no. 9, 2015, pp. 965-972.

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