according mid-term datum level as formation units to establish high-resolution sequence stratigraphy and sum up the feature of deposit sand-fillings by analyzing of short-term datum level.
through selecting floated datum level and using feasible multi-step static correction combination, the static correction problem of long and short wave field was basically solved.
high resolution stratigraphy is a new scientific technology. identification and comparison of cycle change datum level are being its first researching problem.