{"title":"Jeoid Değişimlerinin ICESat Altimetre Verisi ile Hesaplanan Su Seviyelerine Etkisi","authors":"F. Saka, A. Tekeli, Senayi Dönmez","doi":"10.18400/tekderg.634227","DOIUrl":null,"url":null,"abstract":"This study investigates the effects of geoid variations on GLAS altimeter onboard ICESat satellite based water surface elevations (WSE) over Burdur Lake (BL). MODIS snow-covered area maps are used to detect water surfaces daily. The differences between ground observations of BL WSE and those calculated using ICESat Global EGM2008 geoid varied between -0.96m and -0.60m with a root mean square error of 0.73m. The errors of re-calculated water levels with the updated geoid heights varied from -0.20m to 0.16m and the root mean square error decreased to 0.12m. Comparison with DSI ground observations yielded R2 as 0.98. Water level differences between the successive winter and summer is 0.74m and remained within the maximum change of 1.0m.","PeriodicalId":49442,"journal":{"name":"Teknik Dergi","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Teknik Dergi","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.18400/tekderg.634227","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 1
Abstract
This study investigates the effects of geoid variations on GLAS altimeter onboard ICESat satellite based water surface elevations (WSE) over Burdur Lake (BL). MODIS snow-covered area maps are used to detect water surfaces daily. The differences between ground observations of BL WSE and those calculated using ICESat Global EGM2008 geoid varied between -0.96m and -0.60m with a root mean square error of 0.73m. The errors of re-calculated water levels with the updated geoid heights varied from -0.20m to 0.16m and the root mean square error decreased to 0.12m. Comparison with DSI ground observations yielded R2 as 0.98. Water level differences between the successive winter and summer is 0.74m and remained within the maximum change of 1.0m.
本研究调查了大地水准面变化对布尔杜尔湖（BL）上空ICESat卫星水面高程（WSE）GLAS高度计的影响。MODIS雪覆盖区地图用于每天探测水面。BL WSE的地面观测值与使用ICESat Global EGM2008大地水准面的地面观测值之间的差异在-0.96m到-0.60m之间，均方根误差为0.73m。更新大地水准面高度后重新计算的水位误差在-0.20m到0.16m之间，均方误差降至0.12m。与DSI地面观测值相比，R2为0.98。连续冬季和夏季的水位差为0.74m，并保持在1.0m的最大变化范围内。
期刊介绍：
The scope of Teknik Dergi is naturally confined with the subjects falling in the area of civil engineering. However, the area of civil engineering has recently been significantly enlarged, even the definition of civil engineering has somewhat changed.
Half a century ago, engineering was simply defined as “the art of using and converting the natural resources for the benefit of the mankind”. Today, the same objective is expected to be realised (i) by complying with the desire and expectations of the people concerned and (ii) without wasting the resources and within the sustainability principles. This change has required an interaction between engineering and social and administrative sciences. Some subjects at the borderline between civil engineering and social and administrative sciences have consequently been included in the area of civil engineering.
Teknik Dergi defines its scope in line with this understanding. However, it requires the papers falling in the borderline to have a significant component of civil engineering.
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