MLchartDataset catalogue

First arrival

Term · Oil and gas · MLC-T-OAG-001427

The initial energy from a seismic source to reach a receiver, recorded as the onset of the seismic trace. This signal travels the fastest path, which could be a direct wave through the near-surface layer or a refracted wave along a deeper, higher-velocity interface. The travel times of these arrivals are inputs for refraction tomography to model the velocity structure of the weathered layer.

Table 1. Record
IdentifierMLC-T-OAG-001427
FieldOil and gas
SubjectGeophysics
Record as JSON 
{
  "id": "MLC-T-OAG-001427",
  "term": "First arrival",
  "field": "Oil and gas",
  "definition": "The initial energy from a seismic source to reach a receiver, recorded as the onset of the seismic trace. This signal travels the fastest path, which could be a direct wave through the near-surface layer or a refracted wave along a deeper, higher-velocity interface. The travel times of these arrivals are inputs for refraction tomography to model the velocity structure of the weathered layer.",
  "subject": "Geophysics",
  "url": "https://mlchart.com/terminology/oil-and-gas/first-arrival/"
}

Record 1,535 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.