Matthew Peter Griffiths

Research output

Research output per year 2020 2022 2024 2024

• 14 Journal article
• 6 Conference abstract for conference
• 5 Article in proceedings
• 1 Conference abstract in proceedings
• 3 More
  • 1 Paper
  • 1 Conference article
  • 1 Preprint

Research output per year

Research output per year

Search results

• 2024

  An investigation of factors affecting the depths of steady-state surface nuclear magnetic resonance signals

  Grombacher, D., Griffiths, M. P., Kass, M. A. & Larsen, J. J., 1 Mar 2024, In: Geophysics. 89, 2, p. J9-J17

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  • Surface State 100%
  • Nuclear Magnetic Resonance 100%
  • Relaxation Time 100%
  • Duty Cycle 50%
  • Noise-to-Signal Ratio 50%
  3 Citations (Scopus)

• Estimation of hydraulic conductivity variations within glacial sediments at Endelave island by borehole NMR data

  Mashhadi, S. R., Grombacher, D., Pedersen, J. B., Jørgensen, F., Andersen, T. R. & Griffiths, M. P., 2024, 30th European Meeting of Environmental and Engineering Geophysics, Held at the Near Surface Geoscience Conference and Exhibition 2024, NSG 2024. European Association of Geoscientists and Engineers, EAGE

  Research output: Contribution to book/anthology/report/proceeding › Article in proceedings › Research › peer-review

  • Conductivity Variation 100%
  • Hydraulic Conductivity 100%
  • Slug Test 33%
  • Nuclear Magnetic Resonance Technique 16%
  • Multiple Depths 16%

• Estimation of transmitter-receiver separation for mobile ground-based transient electromagnetic systems using on-time gates

  Grombacher, D., Griffiths, M. P. & Maurya, P. K., 12 Dec 2024.

  Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  • Electromagnetic Imaging 100%
  • Receiver Coil 100%
  • Time Gating 100%
  • Electromagnetism 100%
  • Scaling Bias 50%

• Feasibility of Surface Nuclear Magnetic Resonance With Absurdly Long Excitation Pulses

  Larsen, J. J., Kass, M. A., Grombacher, D. & Griffiths, M. P., 28 Oct 2024, In: Geophysical Research Letters. 51, 20, e2024GL110826.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  Open Access

  • Surface nuclear Magnetic Resonance 100%
  • Nuclear Magnetic Resonance 100%
  • NMR Spectroscopy 100%
  • Surface (Surface Science) 75%
  • Bloch Equations 33%

• Feasibility study of steady-state surface NMR with adiabatic pulses

  Griffiths, M. P. & Hardenberg, M., 8 Sept 2024.

  Research output: Contribution to conference › Paper › Research › peer-review

• Feasibility study of steady-state surface NMR with adiabatic pulses

  Hardenberg, M., Griffiths, M. ~., Grombacher, D. & Larsen, J. J., 2024, NSG2024, 30th European Meeting of Environmental and Engineering Geophysics. European Association of Geoscientists and Engineers, p. 1-5 (EAGE Conference Proceedings, Vol. 2024).

  Research output: Contribution to book/anthology/report/proceeding › Article in proceedings › Research › peer-review

  • Feasibility Study 100%
  • Surface State 100%
  • Nuclear Magnetic Resonance 100%
  • Adiabatic Pulse 100%
  • NMR Spectroscopy 100%

• Ground-truth Validation of T₂ Estimates from Steady-state Surface NMR

  Griffiths, M. P., Grombacher, D., Mashhadi, S. R. & Larsen, J. J., 9 Dec 2024.

  Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  • Relaxation Time 100%
  • Noise-to-Signal Ratio 33%
  • State Measurement 33%
  • Acquisition Time 33%
  • Data Collection 33%

• Ground-Truth Validation of T₂ Estimates From Steady-State Surface NMR

  Griffiths, M. P., Grombacher, D., Mashhadi, S. R. & Larsen, J. J., 28 Dec 2024, In: Geophysical Research Letters. 51, 24, e2024GL112094.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  Open Access

  • Ground Validation 100%
  • Relaxation Time 100%
  • State Measurement 50%
  • Horizontal Layer 20%
  • Transverse Relaxation 20%

• Observation of spikelets in steady-state surface nuclear magnetic resonance data

  Grombacher, D., Griffiths, M. P., Vang, M. Ø., Kass, M. A. & Larsen, J. J., 2024, In: Geophysics. 89, 2, p. J1-J8 8 p.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  • Steady State 100%
  • Magnetism 100%
  • Nuclear Magnetic Resonance 100%
  • Excitation Sequence 100%
  • Repetition Time 20%

• Surface NMR with Very Long Transmitter Pulses

  Larsen, J. J., Kass, A., Grombacher, D. & Griffiths, M. P., 12 Dec 2024.

  Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  • Nuclear Magnetic Resonance 100%
  • Relaxation Time 100%
  • Water Content 100%
  • Surface (Surface Science) 80%
  • Nuclear Magnetic Resonance Relaxation 80%

• Synthetic studies to investigate the ability of steady-state surface NMR to resolve T2

  Griffiths, M. P., Grombacher, D. & Larsen, J. J., 8 Sept 2024, NSG 2024 30th European Meeting of Environmental and Engineering Geophysics. European Association of Geoscientists and Engineers, p. 1-5 (EAGE Conference Proceedings, Vol. 2024).

  Research output: Contribution to book/anthology/report/proceeding › Article in proceedings › Research › peer-review

  Open Access

  • Steady State 100%
  • Pulse Rate 50%
  • Pore Size 33%
  • Model Value 33%
  • Pulse Information 33%
• 2023

  A High Duty Cycle Transmitter Unit for Steady-State Surface NMR Instruments

  Gaikwad, N., Liu, L., Griffiths, M. P., Grombacher, D. & Larsen, J. J., 29 Jun 2023, p. 1-22, 22 p. (Geoscientific Instrumentation, Methods and Data Systems).

  Research output: Working paper/Preprint › Preprint

  Open Access

• A surface NMR forward in a dot product

  Griffiths, M. P., Grombacher, D., Kass, M. A., Vang, M., Liu, L. & Larsen, J. J., Sept 2023, In: Geophysical Journal International. 234, 3, p. 2284-2290 7 p.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  • Dot Product 100%
  • Magnetic Resonance 100%
  • Integration Technique 100%
  3 Citations (Scopus)

• Signal Processing Steady-State Surface NMR Data

  Liu, L., Grombacher, D., Griffiths, M., Vang, M. & Larsen, J. J., Apr 2023, In: IEEE Transactions on Instrumentation and Measurement. 72, 6502313.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  • Surface State 100%
  • Nuclear Magnetic Resonance 100%
  • Processing Chain 100%
  • Inversion Procedure 50%
  • Transients 16%
  6 Citations (Scopus)

• Technical note: High-density mapping of regional groundwater tables with steady-state surface nuclear magnetic resonance - three Danish case studies

  Vang, M., Grombacher, D., Griffiths, M. P., Liu, L. & Larsen, J. J., Aug 2023, In: Hydrology and Earth System Sciences. 27, 16, p. 3115-3124 10 p.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  Open Access

  • Nuclear Magnetic Resonance 100%
  • Data Quality 27%
  • Denmark 9%
  • Porosity 9%
  • Sustainable Use 9%
  5 Citations (Scopus)
• 2022

  A Reformulated Surface Nmr Forward For Multi-Sequence Acquisitions

  Griffiths, M., Grombacher, D., Kass, M. A., Liu, L., Vang, M. & Larsen, J. J., 2022, 28th European Meeting of Environmental and Engineering Geophysics, Held at the Near Surface Geoscience Conference and Exhibition 2022, NSG 2022. European Association of Geoscientists and Engineers, 5 p.

  Research output: Contribution to book/anthology/report/proceeding › Article in proceedings › Research › peer-review

  • Surface NMR 100%
  • Sequence Acquisition 100%
  • Multi-sequence 100%
  • Relaxation Time 100%
  • Temporal Aspects 50%

• A steady-state approach to surface nuclear magnetic resonance

  Kass, M. A., Grombacher, D., Griffiths, M., Vang, M. Ø., Liu, L. & Larsen, J. J., 2022, Proceedings of the Symposium on the Application of Geophyics to Engineering and Environmental Problems, SAGEEP. J and N Group, Ltd., p. 54 1 p. (Proceedings of the Symposium on the Application of Geophyics to Engineering and Environmental Problems, SAGEEP).

  Research output: Contribution to book/anthology/report/proceeding › Conference abstract in proceedings › Research

• Efficient processing of surface NMR data with spectral analysis

  Larsen, J. J., Langhof, R. B., Kjær, M. W., Vang, M., Liu, L., Griffiths, M. & Grombacher, D., Apr 2022, In: Geophysical Journal International. 229, 1, p. 286-298 13 p.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  Open Access

  File

  • Processing Step 100%
  • Nuclear Magnetic Resonance 100%
  • Spectrum Analysis 100%
  • Filtering Method 50%
  • Noise-to-Signal Ratio 50%
  1 Citation (Scopus)

  59 Downloads (Pure)

• Fast removal of powerline harmonic noise from surface NMR datasets using a projection-based approach on graphical processing units

  Kjaer-Rasmussen, A., Griffiths, M. P., Grombacher, D. & Larsen, J. J., 2022, In: IEEE Geoscience and Remote Sensing Letters. 19, 5 p., 8024005.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  • Harmonics 100%
  • Nuclear Magnetic Resonance 100%
  • Real Time 50%
  • Matrix Equation 25%
  9 Citations (Scopus)

• Forward Modeling Steady-State Free Precession in Surface NMR

  Griffiths, M. P., Grombacher, D., Liu, L., Vang, M. Ø. & Larsen, J. J., 28 Nov 2022, In: IEEE Geoscience and Remote Sensing Letters. 60, 4513510.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  • Nuclear Magnetic Resonance 100%
  • Dynamic Equilibrium 100%
  • Natural Alignment 50%
  • Forward Model 44%
  • Magnetic Field 11%
  7 Citations (Scopus)

• Frequency Shifting Steady-State Surface NMR Signals to Avoid Problematic Narrowband-Noise Sources

  Grombacher, D., Griffiths, M. P., Liu, L., Vang, M. & Larsen, J. J., Apr 2022, In: Geophysical Research Letters. 49, 7, 9 p., e2021GL097402.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  Open Access

  File

  • Steady State 100%
  • Nuclear Magnetic Resonance 100%
  • Data Quality 22%
  • Harmonics 22%
  • Narrowband 11%
  9 Citations (Scopus)

  25 Downloads (Pure)

• Thermal Model of the Apsu Transmitter for Lightweight and Compact Heat Sink Design

  Gaikwad, N., Liu, L., Griffiths, M. P., Vang, M. Ø., Grombacher, D. & Larsen, J. J., Oct 2022, p. 11-13. 3 p.

  Research output: Contribution to conference › Conference abstract for conference › Research

  • Thermal Model 100%
  • State Sequence 100%
  • Thermal Resistance 100%
  • Transmissions 50%
  • Energy Dissipation 50%
• 2021

  Apsu - A compact surface NMR instrument for groundwater investigations

  Larsen, J. J., Griffiths, M., Vang, M., Liu, L. & Grombacher, D., 2021, In: SEG Technical Program Expanded Abstracts. 2021-September, p. 3135-3139 5 p.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Conference article › Research › peer-review

  • Nuclear Magnetic Resonance 100%
  • Compact Surface 100%
  • Noise Cancellation 14%
  • Larmor Frequency 14%
  • Receiver Coil 14%

• Deep Learning-Based Energy Management of an All-electric City Bus with Wireless Power Transfer

  Rafiei Foroushani, M., Griffiths, M. P., Boudjadar, J. & Khooban, M. H., 2021, In: IEEE Access. 9, p. 43981-43990 10 p., 9380640.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  Open Access

  File

  • Energy Management 100%
  • Wireless Power Transfer 100%
  • Deep Learning 100%
  • Battery (Electrochemical Energy Engineering) 50%
  • Fuel Cell 50%
  18 Citations (Scopus)

  47 Downloads (Pure)

• Efficient numerical Bloch solutions for multipulse surface NMR

  Griffiths, M. P., Grombacher, D. J. & Larsen, J. J., Nov 2021, In: Geophysical Journal International. 227, 3, p. 1905-1916 12 p.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  Open Access

  File

  • Space Solution 100%
  • Relaxation Time 100%
  • Nuclear Magnetic Resonance 100%
  • Polynomial 100%
  • relaxation time τ 66%
  6 Citations (Scopus)

  84 Downloads (Pure)

• Is it redundant to use model-based subtraction together with the reference noise cancellation?

  Liu, L., Griffiths, M. P., Vang, M., Grombacher, D. J. & Larsen, J. J., 2021, 27th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2021, NSG 2021. EAGE Publishing BV, (27th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2021, NSG 2021).

  Research output: Contribution to book/anthology/report/proceeding › Article in proceedings › Research › peer-review

  • Reference Channel 100%

• Steady-State Surface NMR for Mapping of Groundwater

  Grombacher, D., Liu, L., Griffiths, M. P., Vang, M. & Larsen, J. J., Dec 2021, In: Geophysical Research Letters. 48, 23, 9 p., e2021GL095381.

  Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

  • Nuclear Magnetic Resonance 100%
  • Noisy Environment 100%
  • Climate Change 25%
  • Sustainable Use 25%
  • Moisture Content 25%
  20 Citations (Scopus)
• 2020

  Efficient Bloch-equation solvers for surface nuclear magnetic Resonance

  Griffiths, M. P., Grombacher, D. & Larsen, J. J., Dec 2020.

  Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

• Parallelized Hybrid Bloch Solver for Surface Nuclear Magnetic Resonance

  Griffiths, M. P., Grombacher, D. & Larsen, J. J., 2020.

  Research output: Contribution to conference › Conference abstract for conference › Research › peer-review