Resolution

Question 1

Determination of temporal resolution

Answer 1

EITHER : Determine seismic wavelet in gate over multiple traces, make time representation and measure b/2

OR:

Determine dominant wavelength by counting maximum number of full cycles in a time window
Divide by 2 in order to get an approximate value for b/2
Apply a correction factor of 10% (subtract)
Use interval velocity to get resolution in depth

Question 2

TO KNOW ABOUT RESOLUTION

Answer 2

Tuning and temporal resolution are ONLY dependent on wavelet (bandwidth)
Detection is possible from ~b/4

Question 3

Temporal resolution means

Answer 3

separation (and traceability) of two individual reflections

Temporal resolution == half time between sidelobes of wavelet (b/2) i.e. “trough-to-peak”

Question 4

Dominant frequency

Answer 4

Dominant frequency (1/b) can easily be derived from seismic data – a small correction is needed though

Question 5

Resolution in depth

Answer 5

strongly decreases with TWT

Question 6

safest criterion for resolution

Answer 6

Twice tuning thickness (b) safest criterion for resolution of reliable amplitudes