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Omar Ghattas

Omar Ghattas is the John A. and Katherine G. Jackson Chair in Computational Geosciences and Professor of Mechanical Engineering and Geological Sciences at the University of Texas at Austin. Provided by Wikipedia

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1

Big data, sparse information: Bayesian inference for large-scale models, with application to inverse modeling of Antarctic ice sheet dynamics

by Ghattas, Omar
Published 2014

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2

Uncertainty Quantification for Large-Scale Ice Sheet Modeling

by Ghattas, Omar
Published 2016

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3

Bayesian Inversion for Large Scale Antarctic Ice Sheet Flow

by Ghattas, Omar
Published 2015

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Conference Object
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4

Solution of nonlinear Stokes equations discretized by high-order finite elements on nonconforming and anisotropic meshes, with application to ice sheet dynamics

by Isaac, Tobin, Stadler, Georg, Ghattas, Omar
Published 2014

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5

Predicting Ice Sheet and Climate Evolution at Extreme Scales (PISCEES) Final Technical Report for effort at the University of Texas at Austin Award DE-SC0008083 March 2016 - August...

by Jackson, Charles, Stadler, Georg, Ghattas, Omar
Published 2023

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6

Solution of nonlinear Stokes equations discretized by high-order finite elements on nonconforming and anisotropic meshes, with application to ice sheet dynamics

by Isaac, Tobin, Stadler, Georg, Ghattas, Omar
Published in SIAM Journal on Scientific Computing (2014)

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7

A computational framework for infinite-dimensional Bayesian inverse problems: Part II. Stochastic Newton MCMC with application to ice sheet flow inverse problems

by Petra, Noemi, Martin, James, Stadler, Georg, Ghattas, Omar
Published 2013

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Report
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8

Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic i...

by Isaac, Tobin, Petra, Noemi, Stadler, Georg, Ghattas, Omar
Published 2014

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9

Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic i...

by Isaac, Tobin, Petra, Noemi, Stadler, Georg, Ghattas, Omar
Published in Journal of Computational Physics (2021)

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10

Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic i...

by Isaac, Tobin, Petra, Noemi, Stadler, Georg, Ghattas, Omar
Published in Journal of Computational Physics (2023)

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11

Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic i...

by Isaac, Tobin, Petra, Noemi, Stadler, Georg, Ghattas, Omar
Published in Journal of Computational Physics (2014)

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12

Point spread function approximation of high rank Hessians with locally supported non-negative integral kernels

by Alger, Nick, Hartland, Tucker, Petra, Noemi, Ghattas, Omar
Published 2023

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13

A computational framework for infinite-dimensional Bayesian inverse problems: Part II. Stochastic Newton MCMC with application to ice sheet flow inverse problems

by Petra, Noemi, Martin, James, Stadler, Georg, Ghattas, Omar
Published 2013

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14

Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic i...

by Isaac, Tobin, Petra, Noemi, Stadler, Georg, Ghattas, Omar
Published in Journal of Computational Physics (2015)

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Article in Journal/Newspaper
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15

Possible groundwater dominance in the subglacial hydrology of ice sheet interiors: example at Dome C, East Antarctica

by Gooch, Brad T., Carter, Sasha P., Ghattas, Omar, Young, Duncan A., Blankenship, Donald D.
Published 2018

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16

Inversion of geothermal heat flux in a thermomechanically coupled nonlinear Stokes ice sheet model

by Zhu, Hongyu, Petra, Noemi, Stadler, Georg, Isaac, Tobin, Hughes, Thomas J. R., Ghattas, Omar
Published in The Cryosphere (2016)

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17

Inversion of geothermal heat flux in a thermomechanically coupled nonlinear Stokes ice sheet model

by Zhu, Hongyu, Petra, Noemi, Stadler, Georg, Isaac, Tobin, Hughes, Thomas J. R., Ghattas, Omar
Published in The Cryosphere (2018)

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18

Inversion of geothermal heat flux in a thermomechanically coupled nonlinear Stokes ice sheet model

by Zhu, Hongyu, Petra, Noemi, Stadler, Georg, Isaac, Tobin, Hughes, Thomas J. R., Ghattas, Omar
Published in The Cryosphere (2023)

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19

Uncertainty quantification of ocean driven melting under the Pine Island ice shelf

by Smith, Timothy Andrew, Ph. D.
Published 2021
Contributors: “...Ghattas, Omar...”

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Thesis
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20

Modes of deformation in ice in dynamic regions: applications to basal crevasses and calving

by Curry-Logan, Elizabeth Stacia
Published 2015
Contributors: “...Ghattas, Omar...”

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