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Callaghan Presentations

Scottcal — Thu, 01 Oct 2026 15:26:14 GMT

File:2026 DEFORM workshop CyberShake overview.pdf

Scottcal — Thu, 01 Oct 2026 15:26:00 GMT

Scottcal uploaded File:2026 DEFORM workshop CyberShake overview.pdf

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Callaghan Presentations

Scottcal — Thu, 01 Oct 2026 15:25:26 GMT

File:2026 IHPCSS workflows.pdf

Scottcal — Thu, 01 Oct 2026 14:54:39 GMT

Scottcal uploaded File:2026 IHPCSS workflows.pdf

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Callaghan Presentations

Scottcal — Thu, 01 Oct 2026 14:54:22 GMT

Bhatthal Projects and Presentations

Bhatthal — Thu, 01 Oct 2026 06:25:59 GMT

Update Sep and Aug entries

Callaghan Presentations

Scottcal — Tue, 29 Sep 2026 03:58:04 GMT

MUSCAL

Mei — Mon, 28 Sep 2026 21:25:42 GMT

TileDB version of MUSCAL

MUSCAL

Scottcal — Tue, 08 Sep 2026 19:30:41 GMT

Delivered Model

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 == 2026 ==
-*DEFORM workshop presentation: [[File:2026_DEFORM_workshop_CyberShake_overview.pptx | PPTX]], [[File:2026_DEFORM_workshop_CyberShake_overview.pdf | PDF ]]
+*DEFORM workshop presentation: [[File:2026_DEFORM_workshop_CyberShake_overview.pptx | PPTX]], [[:File:2026_DEFORM_workshop_CyberShake_overview.pdf | PDF ]]
 *SCEC Annual Meeting presentation: [[:File:2026_SCEC_AM_PSHA_Platforms.ppt | PPT]], [[:File:2026_SCEC_AM_PSHA_Platforms.pdf | PDF]]
 *IHPCSS workflow presentation: [[File:2026_IHPCSS_workflows.pptx | PPTX]], [[:File:2026_IHPCSS_workflows.pdf | PDF]]

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 == 2026 ==
 *SCEC Annual Meeting presentation: [[:File:2026_SCEC_AM_PSHA_Platforms.ppt | PPT]], [[:File:2026_SCEC_AM_PSHA_Platforms.pdf | PDF]]
-*IHPCSS workflow presentation: [[File:2026_IHPCSS_workflows.pptx | PPTX]], [[File:2026_IHPCSS_workflows.pdf | PDF]]
+*IHPCSS workflow presentation: [[File:2026_IHPCSS_workflows.pptx | PPTX]], [[:File:2026_IHPCSS_workflows.pdf | PDF]]
 *SSA CyberShake presentation: [[:File:2026_SSA_CyberShake_presentation.pptx | PPTX]], [[:File:2026_SSA_CyberShake_presentation.pdf | PDF]]

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 == 2026 ==
 *SCEC Annual Meeting presentation: [[:File:2026_SCEC_AM_PSHA_Platforms.ppt | PPT]], [[:File:2026_SCEC_AM_PSHA_Platforms.pdf | PDF]]
-*IHPCSS workflow presentation: [[:File:2026_IHPCSS_workflows.pptx | PPTX]], [[:File:2026_IHPCSS_workflows.pdf | PDF]]
+*IHPCSS workflow presentation: [[File:2026_IHPCSS_workflows.pptx | PPTX]], [[File:2026_IHPCSS_workflows.pdf | PDF]]
 *SSA CyberShake presentation: [[:File:2026_SSA_CyberShake_presentation.pptx | PPTX]], [[:File:2026_SSA_CyberShake_presentation.pdf | PDF]]

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 == 2026 ==
-== Aug 2026==
+=== Sep 2026 ===
 * Released [https://github.com/opensha/opensha/releases/tag/v26.8.0 OpenSHA v26.8], introducing Maven Central support and auto updates
 === Mar 2026 ===

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 == 2026 ==
-*SCEC Annual Meeting presentation: [[File:2026_SCEC_AM_PSHA_Platforms.ppt | PPT]], [[File:2026_SCEC_AM_PSHA_Platforms.pdf | PDF]]
+*SCEC Annual Meeting presentation: [[:File:2026_SCEC_AM_PSHA_Platforms.ppt | PPT]], [[:File:2026_SCEC_AM_PSHA_Platforms.pdf | PDF]]
 *IHPCSS workflow presentation: [[:File:2026_IHPCSS_workflows.pptx | PPTX]], [[:File:2026_IHPCSS_workflows.pdf | PDF]]
 *SSA CyberShake presentation: [[:File:2026_SSA_CyberShake_presentation.pptx | PPTX]], [[:File:2026_SSA_CyberShake_presentation.pdf | PDF]]
 == 2025 ==
-*SC25 presentation at OSU booth: [[File:AWP_presentation_for_OSU_booth.pptx | PPTX]]
+*SC25 presentation at OSU booth: [[:File:AWP_presentation_for_OSU_booth.pptx | PPTX]]
 *IHPCSS workflow presentation: [[:File:2025_IHPCSS_workflows.pptx | PPTX]], [[:File:2025_IHPCSS_workflows.pdf | PDF]]
 *USGS NorCal Earthquake Hazards workshop CyberShake presentation: [[:File:2025_USGS_NorCal_CyberShake.pptx | PPTX]], [[:File:2025_USGS_NorCal_CyberShake.pdf | PDF]]

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 == Model overview ==
-The MUSCAL Vp and Vs model was created by Te-Yang Yeh and Yehuda Ben-Zion in 2025-6 by starting with the CANVAS tomography model as a base and then integrating multiple regional and local high-resolution models.  Each submodel is evaluated to determine where it improves the fit through simulations of M4 historical events to 1 Hz, and then the overall model is updated where the submodel improves the fit.
+The MUSCAL Vp and Vs model was created by Te-Yang Yeh, Kim B. Olsen and Yehuda Ben-Zion in 2025-6 by starting with the CANVAS tomography model as a base and then integrating multiple regional and local high-resolution models.
 === Model Components ===
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 |}
-To solve this in a consistent and reproducible way, we will extend the MUSCAL model through UCVM.  The initial plan is to use the following algorithm:
+To solve this in a consistent and reproducible way, we will extend the MUSCAL model through UCVM with nearest neighbor extrapolation to generate physically consistent properties beyond defined model boundary .
-<ol>
 <ol>
-<li>Query the 1D MUSCAL model (Te-Yang to provide this).</li>
+<li>Iterate through each layer of MUSCAL dataset and collect the material properties of all edge points</li>
-<li>Determine Vs30 from the USGS Global Vs30 model.</li>
+<li>Compose a surface point dataset from the collected points</li>
-<li>Apply the Ely taper (LVT) to the top 300m.</li>
+<li>During UCVM query process, load the surface dataset and create a kdtree structure (k-dimensional tree), which is good for binary tree search</li>
-</ol>
+<li>If the model query returns NaNs (indicating the point is beyond the bounds of the 3D model); Query the Kdtree for the nearest neighbors.</li>
 </ol>

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 The final version of MUSCAL is delivered in netCDF format.  The dimensions of the model in grid points are 1251 (lat) x 1301 (lon) x 210 (depth). Grid points have a spacing of 0.01 degrees in the horizontal; the depth is variable with denser sampling near the surface.  The model is interpolated using trilinear interpolation.
-Details about the model creation are provided in the paper and the [https://zenodo.org/records/19243477 Zenodo page].
+Details about the model creation are provided in the paper ([https://essopenarchive.org/doi/full/10.22541/essoar.15001929/v1 preprint]) and the [https://zenodo.org/records/19243477 Zenodo page].
 Below is a plot of the 3D model extent.