From ljhwang at ucdavis.edu  Wed Oct  3 14:08:56 2018
From: ljhwang at ucdavis.edu (Lorraine Hwang)
Date: Wed, 3 Oct 2018 14:08:56 -0700
Subject: [CIG-SEISMO] CIG Wanted: Your 2018 Fall AGU Abstract
Message-ID: <B0B452D0-9FD8-4504-A4E3-68AEF147E5DB@ucdavis.edu>

Congratulations to all CIG community members with accepted abstracts for this year’s 2018 Fall AGU Meeting.  Help your colleagues and attendees find your research by listing it on the CIG website:
	https://geodynamics.org/cig/events/calendar/agu-2018/2018-agu-abstracts/ <https://geodynamics.org/cig/events/calendar/agu-2018/2018-agu-abstracts/>
To do so, please reply to this email events at  <http://lists.geodynamics.org/cgi-bin/mailman/listinfo/cig-all>geodynamcis.org <http://geodynamcis.org/> by simply cutting and pasting your acceptance information AND your link to your abstract.
e.g.,

https://agu.confex.com/agu/fm18/meetingapp.cgi/Paper/419977 <https://agu.confex.com/agu/fm18/meetingapp.cgi/Paper/419977>

Abstract ID: 419977 
Abstract Title: A Decade+ of Open Software Practice at CIG 
Final Paper Number: IN43C-2835 
Presentation Type: Poster 
Session Date and Time: Thursday, 13 December 2018; 13:40 - 18:00 
Session Number and Title: IN43C: FAIR Data Is Not Enough: Communicating Data Quality and Making Analytical Code FAIR Posters 



Best,
-Lorraine

*****************************
Lorraine Hwang, Ph.D.
Associate Director, CIG
530.752.3656



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From yingz at vt.edu  Thu Oct  4 20:05:54 2018
From: yingz at vt.edu (Ying Zhou)
Date: Thu, 4 Oct 2018 23:05:54 -0400
Subject: [CIG-SEISMO] CIG Wanted: Your 2018 Fall AGU Abstract
In-Reply-To: <B0B452D0-9FD8-4504-A4E3-68AEF147E5DB@ucdavis.edu>
References: <B0B452D0-9FD8-4504-A4E3-68AEF147E5DB@ucdavis.edu>
Message-ID: <CAFfmFaCRakKshuQ7xtc=WGO3x=P5ULiQh=u23zHfMA+hNfUTqw@mail.gmail.com>

Hi Lorraine --  Here are two (seismology) abstracts.  Thanks,   Ying

----

https://agu.confex.com/agu/fm18/meetingapp.cgi/Paper/386117
Abstract ID: 386117
Abstract Title: Dynamics of Stagnant Slabs in the Mantle Transition Zone
Final Paper Number: DI22A-05
Presentation Type: Oral
Session Date and Time: Tuesday, 11 December 2018; 10:20 - 12:20
Presentation Length: 11:20 - 11:35
Session Number and Title: DI22A: Subducting Slabs in the Mantle II
Location: Marriott Marquis; Archives


https://agu.confex.com/agu/fm18/meetingapp.cgi/Paper/417990
Abstract ID: 417990
Abstract Title: Imaging the Sharpness of the Lithosphere-Asthenosphere
Boundary (LAB)
Final Paper Number: T54B-08
Presentation Type: Oral
Session Date and Time: Friday, 14 December 2018; 16:00 - 18:00
Presentation Length: 17:45 - 18:00
Session Number and Title: T54B: Structure and Dynamics of the Upper Mantle:
Characterizing the Lithosphere–Asthenosphere System from Crust to
Transition Zone III
Location: Marriott Marquis; Liberty L

----





On Wed, Oct 3, 2018 at 5:08 PM, Lorraine Hwang <ljhwang at ucdavis.edu> wrote:
>
> Congratulations to all CIG community members with accepted abstracts for
this year’s 2018 Fall AGU Meeting.  Help your colleagues and attendees find
your research by listing it on the CIG website:
>
> https://geodynamics.org/cig/events/calendar/agu-2018/2018-agu-abstracts/
>
> To do so, please reply to this email events at geodynamcis.org by simply
cutting and pasting your acceptance information AND your link to your
abstract.
>
> e.g.,
>
>
> https://agu.confex.com/agu/fm18/meetingapp.cgi/Paper/419977
>
> Abstract ID: 419977
> Abstract Title: A Decade+ of Open Software Practice at CIG
> Final Paper Number: IN43C-2835
> Presentation Type: Poster
> Session Date and Time: Thursday, 13 December 2018; 13:40 - 18:00
> Session Number and Title: IN43C: FAIR Data Is Not Enough: Communicating
Data Quality and Making Analytical Code FAIR Posters
>
>
>
>
> Best,
> -Lorraine
>
> *****************************
> Lorraine Hwang, Ph.D.
> Associate Director, CIG
> 530.752.3656
>
>
>
>
> _______________________________________________
> CIG-SEISMO mailing list
> CIG-SEISMO at geodynamics.org
> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/cig-seismo
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From Moritz.Fehr at dmt-group.com  Tue Oct  9 22:27:18 2018
From: Moritz.Fehr at dmt-group.com (Fehr, Moritz)
Date: Wed, 10 Oct 2018 05:27:18 +0000
Subject: [CIG-SEISMO] Problem with external velocity model
Message-ID: <bd7cdcf8a2684ca6866b48783a97f475@H04EXC13.netz.tuev-nord.de>

Hi,
I have some issues using an external velocity model with ”low“ velocities. The model size is 3 x 3 x 2.52 km and the mesh size is 40 m in all directions. The velocity model is discretized with 40m as well.
If  I  use my initial velocity model with minimum velocities Vp = 2263 m/s and Vs = 1307 m/s the simulation works fine. In the next step I wanted to implement a low velocity patch within the initial velocity model (see: v_model_patch.png) to investigate the influence of the low velocity body. The minimum velocities are Vp = 955 m/s and Vs = 555 m/s (blue). The problem is that SPECFEM do not detect these low velocities (see output_solver.txt) and the simulation provides the same results as the initial simulation. I also tried different mesh sizes and velocity model spacing but the problem still remains. Do anybody have an idea about the origin of that issue?

Thanks
Moritz

PS: I am using SPECFEM3D Cartesian (Version 3.0) with two GPUs  (Tesla K40m) and 28 CPUs.



___________________________________________________________________________________________________
Sitz der Gesellschaft/Headquarters: DMT GmbH & Co. KG * Am Technologiepark 1 * 45307 Essen * Deutschland/Germany
Registergericht/County Court: Amtsgericht Essen * HRA 9091 * USt-ID DE 253275653
Komplementär/Fully Liable Partner: DMT Verwaltungsgesellschaft mbH, Essen
Registergericht/County Court: Amtsgericht Essen * HRB 20420
Geschäftsführer/Board of Directors: Dr. Maik Tiedemann (Vorsitzender/CEO), Jens-Peter Lux, Ulrich Pröpper
Vorsitzender des Aufsichtsrates/Chairman of the Supervisory Board: Jürgen Himmelsbach
TÜV NORD GROUP
___________________________________________________________________________________________________


Diese Nachricht enthält vertrauliche Informationen und ist nur für den Empfänger bestimmt. Wenn Sie nicht der Empfänger sind, sollten Sie die E-Mail nicht verbreiten, verteilen oder diese E-Mail kopieren. Benachrichtigen Sie bitte den Absender per E-Mail, wenn Sie diese E-Mail irrtümlich erhalten haben und löschen dann diese E-Mail von Ihrem System.

This message contains confidential information and is intended only for the recipient. If you are not the recipient you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system.
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From komatitsch at lma.cnrs-mrs.fr  Wed Oct 10 04:29:35 2018
From: komatitsch at lma.cnrs-mrs.fr (Dimitri Komatitsch)
Date: Wed, 10 Oct 2018 13:29:35 +0200
Subject: [CIG-SEISMO] Problem with external velocity model
In-Reply-To: <bd7cdcf8a2684ca6866b48783a97f475@H04EXC13.netz.tuev-nord.de>
References: <bd7cdcf8a2684ca6866b48783a97f475@H04EXC13.netz.tuev-nord.de>
Message-ID: <68274d7a-d408-34f3-a3da-766170601ec6@lma.cnrs-mrs.fr>


Hi Moritz,

Are you using the internal mesher, or an external model and external mesh?

Thanks,
Dimitri.

On 10/10/2018 07:27 AM, Fehr, Moritz wrote:
> Hi,
> 
> I have some issues using an external velocity model with ”low“ 
> velocities. The model size is 3 x 3 x 2.52 km and the mesh size is 40 m 
> in all directions. The velocity model is discretized with 40m as well.
> 
> If  I  use my initial velocity model with minimum velocities Vp = 2263 
> m/s and Vs = 1307 m/s the simulation works fine. In the next step I 
> wanted to implement a low velocity patch within the initial velocity 
> model (see: v_model_patch.png) to investigate the influence of the low 
> velocity body. The minimum velocities are Vp = 955 m/s and Vs = 555 m/s 
> (blue). The problem is that SPECFEM do not detect these low velocities 
> (see output_solver.txt) and the simulation provides the same results as 
> the initial simulation. I also tried different mesh sizes and velocity 
> model spacing but the problem still remains. Do anybody have an idea 
> about the origin of that issue?
> 
> Thanks
> 
> Moritz
> 
> PS: I am using SPECFEM3D Cartesian (Version 3.0) with two GPUs (Tesla 
> K40m) and 28 CPUs.
> 
> *___________________________________________________________________________________________________* 
> *Sitz der Gesellschaft/Headquarters:* DMT GmbH & Co. KG * Am 
> Technologiepark 1 * 45307 Essen * Deutschland/Germany 
> *Registergericht/County Court:* Amtsgericht Essen * HRA 9091 * USt-ID DE 
> 253275653 *Komplementär/Fully Liable Partner:* DMT 
> Verwaltungsgesellschaft mbH, Essen *Registergericht/County Court:* 
> Amtsgericht Essen * HRB 20420 *Geschäftsführer/Board of Directors:* Dr. 
> Maik Tiedemann (Vorsitzender/CEO), Jens-Peter Lux, Ulrich Pröpper 
> *Vorsitzender des Aufsichtsrates/Chairman of the Supervisory Board:* 
> Jürgen Himmelsbach *TÜV NORD GROUP* 
> *___________________________________________________________________________________________________* 
> 
> 
> Diese Nachricht enthält vertrauliche Informationen und ist nur für den 
> Empfänger bestimmt. Wenn Sie nicht der Empfänger sind, sollten Sie die 
> E-Mail nicht verbreiten, verteilen oder diese E-Mail kopieren. 
> Benachrichtigen Sie bitte den Absender per E-Mail, wenn Sie diese E-Mail 
> irrtümlich erhalten haben und löschen dann diese E-Mail von Ihrem System.
> 
> This message contains confidential information and is intended only for 
> the recipient. If you are not the recipient you should not disseminate, 
> distribute or copy this e-mail. Please notify the sender immediately by 
> e-mail if you have received this e-mail by mistake and delete this 
> e-mail from your system.
> 
> 
> _______________________________________________
> CIG-SEISMO mailing list
> CIG-SEISMO at geodynamics.org
> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/cig-seismo
> 

-- 
Dimitri Komatitsch, CNRS Research Director (DR CNRS)
Laboratory of Mechanics and Acoustics, Marseille, France
http://komatitsch.free.fr

From avinash07guddu at gmail.com  Thu Oct 25 11:18:22 2018
From: avinash07guddu at gmail.com (Avinash Nayak)
Date: Thu, 25 Oct 2018 23:48:22 +0530
Subject: [CIG-SEISMO] SPECFEM3D internal mesher
Message-ID: <CA+ebHSc4LKwNzxAiEWAd_SVRqRSiT5=-JwpUjwAPQ2dfu4+gWQ@mail.gmail.com>

Hi,
I am new to SPECFEM3D. I have 2 questions on this software and I will be
very grateful for your help.
1) Meshing with CUBIT allows one to assign different tomography files with
different discretization intervals to different elements of the mesh. Is it
possible to use the internal mesher xmeshfem3D in the same way with more
than one tomography file ? Any working example will be really helpful.
2) Does the internal mesher  work with perfectly matched layer (CPML) ?
Chapter 4 says xmeshfem3D generated meshes don't support CPML yet but the
example mesh files for xmeshfem3D have some lines with
"THICKNESS_OF_X_PML", etc although the PML_CONDITIONS flag in these
examples is .false.
Thanks for your help.
Regards,
Avinash

-- 
Avinash Nayak,
Research Associate,
Department of Geoscience,
University of Wisconsin, Madison
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From komatitsch at lma.cnrs-mrs.fr  Thu Oct 25 14:02:29 2018
From: komatitsch at lma.cnrs-mrs.fr (Dimitri Komatitsch)
Date: Thu, 25 Oct 2018 23:02:29 +0200
Subject: [CIG-SEISMO] SPECFEM3D internal mesher
In-Reply-To: <CA+ebHSc4LKwNzxAiEWAd_SVRqRSiT5=-JwpUjwAPQ2dfu4+gWQ@mail.gmail.com>
References: <CA+ebHSc4LKwNzxAiEWAd_SVRqRSiT5=-JwpUjwAPQ2dfu4+gWQ@mail.gmail.com>
Message-ID: <b89027bb-1da3-0082-7a6b-0dd2f0d5b6b6@lma.cnrs-mrs.fr>


Hi Avinash,

Regarding 1) I am not sure (let me cc Vadim to see if he knows).

Regarding 2) you are right, I added full support for CPMLs to the 
internal mesher a few months ago, but forgot to remove the sentence from 
the users manual. I have just removed it tonight. Thanks for pointing 
this out.

Best regards,
Dimitri.

On 10/25/18 8:18 PM, Avinash Nayak wrote:
> Hi,
> I am new to SPECFEM3D. I have 2 questions on this software and I will be 
> very grateful for your help.
> 1) Meshing with CUBIT allows one to assign different tomography files 
> with different discretization intervals to different elements of the 
> mesh. Is it possible to use the internal mesher xmeshfem3D in the same 
> way with more than one tomography file ? Any working example will be 
> really helpful.
> 2) Does the internal mesher  work with perfectly matched layer (CPML) ? 
> Chapter 4 says xmeshfem3D generated meshes don't support CPML yet but 
> the example mesh files for xmeshfem3D have some lines with 
> "THICKNESS_OF_X_PML", etc although the PML_CONDITIONS flag in these 
> examples is .false.
> Thanks for your help.
> Regards,
> Avinash
> 
> -- 
> Avinash Nayak,
> Research Associate,
> Department of Geoscience,
> University of Wisconsin, Madison
> 
> _______________________________________________
> CIG-SEISMO mailing list
> CIG-SEISMO at geodynamics.org
> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/cig-seismo
> 

-- 
Dimitri Komatitsch, CNRS Research Director (DR CNRS)
Laboratory of Mechanics and Acoustics, Marseille, France
http://komatitsch.free.fr