[GPlates-discuss] GPlates-discuss Digest, Vol 40, Issue 1

[Douwe van Hinsbergen]

Hi Zhitu,

Check your rotation file: ‘1’ is typically used for the spin axis and is defined by a paleomagnetic reference frame, ‘0’ is the mantle and is given by a mantle reference frame. What reference frame are you using? If you use a pmag frame, then you’d expect a mismatch with hotspot tracks, for starters because there’s no paleolongitude control.

Hope this helps,
Douwe

-- 
Dr. Douwe J.J. van Hinsbergen | Associate Professor | Department of Earth Sciences | Utrecht University|   Heidelberglaan 2, 3584 CS Utrecht | Room 8.09 | tel. (030) 253 6712 | D.J.J.vanHinsbergen at uu.nl | http://www.geologist.nl |

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> Today's Topics:
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>   1. tristan hotspot track (Zhitu Ma)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Wed, 12 Apr 2017 18:16:54 -0400
> From: Zhitu Ma <zhitu_ma at brown.edu>
> To: gplates-discuss at mailman.sydney.edu.au
> Subject: [GPlates-discuss] tristan hotspot track
> Message-ID: <9A0D6605-C21F-47AC-804B-E25727C47AE1 at brown.edu>
> Content-Type: text/plain; charset="utf-8"
> 
> Hi all,
> 
> I am trying to use GPlate to compute the hotspot track for Tristan.  
> 
> I place a seed point at the current location of the Tristan hotspot, then I create a new feature as motion path.  I set the Plate ID to be 1 and the relative Plate ID to be 701.  I set the time from 90 My to current.  
> 
> I do get a track but it doesn?t seem to follow the topography shown by the gravity raster file.  I am wondering if anyone knows what happen?  Maybe I missed something very simple here.
> 
> All the files I am using are from the GPlate Feature collection and Rasters folders.
> 
> Thanks!
> Zhitu Ma
> 
> 
> 
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