Joint Research (Type IV）
Environmental Change of the Ayeyarwady Delta
Project Leader: HARUYAMA, Shigeko, Graduate School of Bioresources, Mie
University,
（Term：2010 - 2011）
- Joint Seminars in 2010 Fiscal Year
- Outline of Joint Research
- A natural environment change study regarding remarkable natural disasters
with water related natural hazards in the lower part of the Ayeyarwady
River Basin, in the Holocene period will be carried out to advance research
of river morphology. Storm surges, high tides and tsunamis usually create
specific sedimentation in the delta formation. In our conceptual framework,
we will define the high resolution of deposition processes of the delta
area. Through the Bagan Period in the central part of Myanmar, development
activities suffered from land use and land cover changes over the watershed
of the Ayeyarwady river. In the context of agricultural development and
urban development in the river basin, the sedimentation process will be
clarified to analysis the geomorphologic process scenarios of large rivers
in Monsoon Asia.
- Purpose of Joint Research
-
There is a significant history of the kingdom of Myanmar and of expanding
human activities, however, field study and research results of the natural
environmental change of the Ayeyarwady River Basin have been scarce in
the past decades. In this study, we will try to do a specific geological
and physical geographical study to clarify disturbances over the land of
a large river watershed, utilizing the deposition characteristics of high
tides, tsunamis and storm surges and also looking at remarkable flooding
in the study area. We will also look at the fluvial geomorphology, and
conduct a high-resolution analysis for natural environmental changes in
the large delta area in Monsoon Asia. Geographers from Myanmar will also
join the GIS study for land use and land cover changes of the river basin
and will create scenarios that explain the history of land cover change.
In this study, the historical events of natural disasters will be clarified
in relation to physical and human geographical studies by looking at the
sequences of environmental changes significant in Monsoon Asia.
- Outline of Result
- In this study, the meandering index was constructed for 60years using remote
sensing data compared with Japan Army topographic maps. All core boring
was done in Myandon point along the Ayayawady river delta for clarification
of natural environmental change. The analysis is now on going process,
however we got the 14C data from 30m depth and sedimentation faces shows
specific geological situation during recent 14000years and Holocene. The
disturbance over the land of the large river watershed, utilizing the deposition
characteristics of high tide, Tsunami and storm surge and also remarkable
flooding in the study area. Regarding to the fluvial geomorphology, the
high- resolution analysis for natural environmental change in the large
delta area in Myanmar. We will try to make relationwhip between sedimentation
process and land cover change with human activities in this study area.
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