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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
Alluvial soils (fluvic Gleysols) can be found in the flood plains.
They have the texture of silty clay loam and they have the
neutral soil reaction and are rich in available plant nutrients.
nMeadow Gley soils (Gleysol) and Meadow swampy (Histic
Gleysol) occur in the regions of lower depressions where the
lands are inundated for more than 6 months in a year. The
texture of these soils is clayey to clay and usually having very
strong acid reaction, and contain large amount of iron.
Soil Map of Yangen Division is
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Figure 2. Soil map of the Yangon area (copyright of Land use
division, Myanma Agriculture Service (Feb 11, 2002)
Dune forest and Beach sand can be found only at the
coastal line of Myanmar. The areas of their occurrence are
insignificant. The coastal line should be under wind and water
erosion control. Mangrove forest soils occur in very small area
along the coastal line of Myanmar, especially in the region of
Ayeyarwady Delta. These are marine flat lowlands, which are
affected by daily tides. Saline swampy meadow gley soils in
Ayeyarwady Delta and along the river bands of the Gulf of
Motama and the marine flat lowlands influenced by the tidal
sea water, which is always salty.
2.3 Typical Drainage Patterns
This area almost fluvial food plain, other is lower coastal plains
where there may be few surface drainage channels. In and
around Yangon river areas, the water table is often high;
relatively young and subjected to a minimum of dissection. À
high water table minimizes runoff and restrict system that may
from between floods.
Many major streams in level regions are constructional. They
build up their own flood plains and have little contact with the
underlying material of the area. Some major streams in level
areas, however, are engaged in eroding and are, therefore
destructional. Examples of such streams may be found in
coastal plains and in lakebeds.
Figure 3. Typical Tidal Flood Pattern in Myanmar
3. METHODOLOGY APPROACH
The methodology used in this study involved distinct steps of
digital processing of individual remote sensing data, multi-
sensor data integration, and visual interpretation of the
geomorphological products. The processing of remote sensing
images was done using ENVI 4.7 and Sufer version 10.7.972
software, following schemes for enhancements and integration
of optical and SAR images successfully used for Yangon river
geomorphology and terrain analysis. The corresponding
information was acquired on the terrain based on a ground
positioning system (GPS) campaign and used as ground control
points (GCPs). Since the area presents low relief and no digital
elevation model (DEM) was available, an ortho-rectification
scheme, assuming a flat terrain model.
4. RESULTS AND DISSUSION
4.1 Interpretation and terrain analysis from optical data
Long ago back from more than 10 years, AVNIR imagery
taken by Japan Advanced Earth Observation Satellite (ADEOS)
Figure 4. ADEOS/AVNIR 432 FCC Color Composite Image
acquisition at December 25, 1996
