Performance comparison of aerial photographs and IRS-P6 and ETM+ panchromatic bands in determining sand dune morphology
Author(s):
Abstract:
In this survey, the performance of aerial photographs and satellite imagery in determining sand dunes morphology was studied in the Erg of Gavkhouni international wetland located in the southeast part of Isfahan province. Aerial photographs (scale:1:20000) and the panchromatic bands of ETM+ and IRS-P6 sensor were acquired and geometrically corrected using topographic map of the region (scale:1:25000) with RMS error less than one pixel. After this stage, the morphology of sand dunes was extracted from the mosaic of aerial photographs and also panchromatic bands using vector tools in ArcGIS environment. According to the results, five sand dune morphology were determined including transverse dunes, star dunes, silk, seif and reversing dunes. Comparison the morphology and area of dunes extracted from the aerial photographs and IRS_P6 panchromatic band showed that they were mostly similar and this means that satellite panchromatic bands due to their repeatability, cost effectiveness, broad coverage and high spatial resolution can be used as an alternative or complement to aerial photographs for studying sand dune morphology.
Keywords:
Language:
Persian
Published:
Desert Ecosystem Engineering Journal, Volume:2 Issue: 3, 2014
Pages:
45 to 54
magiran.com/p1487820
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!