Management of Large Seismic Datasets S. Kasra Hosseini Zad Dr. - - PowerPoint PPT Presentation

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management of large seismic datasets
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Management of Large Seismic Datasets S. Kasra Hosseini Zad Dr. - - PowerPoint PPT Presentation

Dec 21, 2023 161 likes •315 views

Management of Large Seismic Datasets S. Kasra Hosseini Zad Dr. Karin Sigloch Simon Sthler Dr. Tarje Nissen Meyer Special Thanks to: Robert Barsch Motivation 14080x1000x3 = ~40,000,000 waveforms = ~40,000,000 Response = 14 TB NDLB part I

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SLIDE 1

Management of Large Seismic Datasets

  • S. Kasra Hosseini Zad
  • Dr. Karin Sigloch

Simon Stähler

  • Dr. Tarje Nissen Meyer

Special Thanks to: Robert Barsch

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SLIDE 2

Motivation

14080x1000x3 = ~40,000,000 waveforms = ~40,000,000 Response = 14 TB

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SLIDE 3

NDLB part I

  • 1. Process-centric
  • 2. Data-centric
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SLIDE 4

Continuous and Event-based seismograms

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SLIDE 5

Plots

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SLIDE 6

Response file

u = convolution(source, earth, instrument) Response:

  • Function of the sensor (poles and

zeros+constant gain (vol to m/s))

  • Filters (analog signal to digitized sample)

[poles and zeros]

digitizers → series of low pass and decimation →

  • utput sampling rate
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SLIDE 7

Instrument Correction

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SLIDE 8

Selecting required seismograms

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SLIDE 9

NDLB vs rdseed+SAC

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SLIDE 10

Cutting TF Windows

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SLIDE 11

Process-centric...one example (Wadati-Benioff Zone)

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SLIDE 12

Thank you!

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SLIDE 13

Close Future!

  • 1. STA/LTA (Short/Long Term Averaging)
  • 2. Compute Synthetic Seismograms (AXISEM)
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SLIDE 14

Instrument Correction

  • 1. RTR
  • 2. Taper