Clarification regarding topo value B in fixed grid monitoring output files

[NAVEEN R]

Hello everyone,

My name is Naveen and I am using GEOCLAW for some tsunami simulation. 

I am a bit confused with the value indicated by topo B in column 4 of the fgmax output text files as described here: https://www.clawpack.org/fgmax.html#:~:text=The%20columns%20of,2N%3A%20arrival%20time

1.  Does the topo B value indicate the pre or post-deformation elevation value on the selected AMR level? I ask this because the B values remain the same for all of my different tsunami dtopo events I am modelling.
2. If it is the pre-deformation value, is there a place where the updated topo value is saved during the simulation, which is the B +  dz (local deformation)? 
3. Just to be double sure, is the value in Column 5 max depth h,  given wrt to topo B elevation pre or post dtopo deformation?

Thanks in advance.

Naveen

 

[NAVEEN R]

Any comments? Also, I was a bit confused if the fgmax grid depth h is wrt pre B0 or B post-deformation elevation on land.

[Kyle Mandli]

Hi Naveen,

The value used is the current topography as of the recording of the values.  In other words, if the topography has finished moving then the value recorded is post-deformation.  The depth value is independent of the topography so that will not be impacted.

Kyle

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