DEM Resolution Impact on the Estimation of the Physical Characteristics of Watersheds by Using SWAT
المؤلفون المشاركون
Kangrang, Anongrit
Buakhao, Waranyu
المصدر
العدد
المجلد 2016، العدد 2016 (31 ديسمبر/كانون الأول 2016)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2016-02-14
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
A digital elevation model (DEM) is an important spatial input for automatic extraction of topographic parameters for the soil and water assessment tool (SWAT).
The objective of this study was to investigate the impact of DEM resolution (from 5 to 90 m) on the delineation process of a SWAT model with two types of watershed characteristics (flat area and mountain area) and three sizes of watershed area (about 20,000, 200,000, and 1,500,000 hectares).
The results showed that the total lengths of the streamline, main channel slope, watershed area, and area slope were significantly different when using the DEM datasets to delineate.
Delineation using the SRTM DEM (90 m), ASTER DEM (30 m), and LDD DEM (5 m) for all watershed characteristics showed that the watershed sizes and shapes obtained were only slightly different, whereas the area slopes obtained were significantly different.
The total lengths of the generated streams increased when the resolution of the DEM used was higher.
The stream slopes obtained using the small area sizes were insignificant, whereas the slopes obtained using the large area sizes were significantly different.
This suggests that water resource model users should use the ASTER DEM as opposed to a finer resolution DEM for model input to save time for the model calibration and validation.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Buakhao, Waranyu& Kangrang, Anongrit. 2016. DEM Resolution Impact on the Estimation of the Physical Characteristics of Watersheds by Using SWAT. Advances in Civil Engineering،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1094876
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Buakhao, Waranyu& Kangrang, Anongrit. DEM Resolution Impact on the Estimation of the Physical Characteristics of Watersheds by Using SWAT. Advances in Civil Engineering No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1094876
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Buakhao, Waranyu& Kangrang, Anongrit. DEM Resolution Impact on the Estimation of the Physical Characteristics of Watersheds by Using SWAT. Advances in Civil Engineering. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1094876
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1094876
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر