Results 81 to 90 of about 5,942,429 (123)

Automatic Detection of Floating Ulva prolifera Bloom from Optical Satellite Imagery

open access: yesJournal of Marine Science and Engineering
Annual outbreaks of floating Ulva prolifera blooms in the Yellow Sea have caused serious local environmental and economic problems. Rapid and effective monitoring of Ulva blooms from satellite observations with wide spatial-temporal coverage can greatly ...
Hailong Zhang   +5 more
doaj   +1 more source

Patterns and dynamics of stranding and deposition of green tides in the Yellow Sea: insights from a satellite-based Lagrangian approach

open access: yesEnvironmental Research Letters
Green tides dominated by Ulva prolifera have become a recurrent ecological hazard in the Yellow Sea, which is typically associated with benthic oxygen depletion and localized nutrient regeneration in coastal waters.
Hu Li, Chengxin Qin, Qian Zhao
doaj   +1 more source

GEOMETRIC PERFORMANCE ESTIMATION OF GEOSTATIONARY OCEAN COLOR IMAGER (GOCI) L1B DATA: 2010.08-2011.09

open access: yes, 2012
We will review the geometric validation of GOCI L1B data produced at the IMPS (Image Pre-Processing System) level for the period August 2010 to September 2011.
양찬수
core  

GOCI-II 센서의 복사 감도저하 보정을 위한 초기단계 모델의 적용 및 결과

open access: yes, 2022
위성 원격탐사를 이용한 환경 모니터링을 위해서는 정확하고 일관된 측정이 필요하지만 위성 발사 이후 센서의 노후화로 인해 감도저하가 발생할 수 있다. 이는 대기보정의 정확도 뿐 아니라 장기간 해양환경변수 모니터링 추세에도 영향을 미치기 때문에 태양광 또는 월광을 이용해 감도저하가 고려된 복사 보정 계수를 지속적으로 업데이트해야 한다. 본 연구에서는 한반도를 포함한 동북아해역을 관측하는 천리안해양위성 (2nd Geostationary Ocean Color
이은경, 강금실, 안재현
core  

GOCI-II를 활용한 해빙 탐지 및 모니터링

open access: yes, 2023
서해 해빙은 12월부터 3월까지 발생하며, 표층 반사를 통해 지역적인 날씨에 영향을 미치고, 어업, 교통, 자원 탐사 등과 같은 경제적인 활동에도 영향을 미친다. 그리고 유빙은 항구 시설, 양식장, 배의 안전을 저해하여 경제적 손실을 발생시킨다. 그러므로 SAR 센서와 advanced very high-resolution radiometers (AVHRR)과 moderate resolution imaging spectroradiometer (MODIS)
Park, Young Je   +2 more
core  

Estimation of PAR at the ocean surface around the Korean Peninsula using GOCI-I and GOCI-II: preliminary result

open access: yes
Photosynthesis available radiation (PAR) has a key role in estimating primary production in the ocean. GOCII and GOCI-II were the world’s first geostationary ocean color satellite sensors, and they observed the ocean around the Korean Peninsula ...
Choi, Jong Kuk   +4 more
core  

Operation Status of In-orbit Radiometric Calibration for Geostationary Ocean Color Imager

open access: yes, 2012
After the successful launch and in-orbit test of GOCI(Geostationary Ocean Color Imager), one of main payloads of COMS(Communication, Ocean and Meteorological Satellite), the new era of ocean color remote sensing has begun with the worlds first ocean ...
이순주   +5 more
core  

system design of GOCI-II ground segment

open access: yes, 2016
The second Geostationary Ocean Color Imager (GOCI-II) which is an ocean monitoring sensor on GEOKOMPSAT-2B scheduled to be launched in 2019, is needed new ground segment for its data acquiring, processing, storing, distributing.
곽성희   +4 more
core   +1 more source

Systemic Ground-Segment Development for the Geostationary Ocean Color Imager II, GOCI-II

open access: yes, 2017
최근, 효율적인 위성자료처리시스템의 개발을 위해 고성능 컴퓨팅, 클라우스 서비스, 데브옵스 방법론 등의 정보기술(information technology; IT)을 활용하는 연구가 활발히 진행되고 있다. 해양의 장단기 변화를 관측하여 해양재해・재난 예측 및 어장환경 관리를 지원하기 위해 정지궤도해양관측위성-II(Geostationary Ocean Color Imager II; GOCI-II)이 2019년 3월 발사될 예정이며, 자료 수신/처리/저장 ...
박영제, 양현, 허재무, 한희정
core  

Current status of GOCI-II atmospheric correction and its update plans

open access: yes, 2023
Atmospheric correction is a necessary process in ocean color remote sensing that estimates the water reflectance at the sea surface from the top-of-atmosphere. This study describes the current calibration and validation status of the second Geostationary
Lee, Sun Ju   +11 more
core  

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