Drawing 2D Velocity Structures?

In summary, the conversation is about drawing 2D velocity structures, specifically the velocity of a plane relative to the air, the velocity of a plane relative to the ground, and the velocity of the air relative to the ground. Tips are given on how to draw these structures, including naming the velocities and following the vector equation AG = AP + PG. The PF library on vector triangle is also recommended as a resource.
  • #1
justinh8
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Drawing 2D Velocity Structures?

Homework Statement


I need some help in drawing structures such as velocity of the plane relative to the air, velocity of the plane relative to the ground, and velocity of the air relative to the ground. Please give me some tips on how to drawing these, thanks!
 
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  • #2
hijustinh8! :smile:

usually, you're given two out of the three velocities, and you're asked to find the third…

drawing the two given velocities is easy (mark them with arrows), the only difficulty is knowing whether to fit one onto the beginning or the end of the other!

to get that right , give them names like VAP VAG and VPG …

then all you have to remember is that the arrows must agree with the vector equation AG = AP + PG :smile:

see also the pf library on vector triangle :wink:
 
Last edited:

Related to Drawing 2D Velocity Structures?

1. What is the purpose of drawing 2D velocity structures?

2D velocity structures are used to represent the variation of velocity with depth in a 2-dimensional cross-section of the Earth. This information is crucial for understanding the subsurface structure and properties of the Earth.

2. How is a 2D velocity structure created?

A 2D velocity structure is typically created by analyzing seismic data, which involves measuring the travel time of seismic waves as they travel through the Earth. This data is then used to create a velocity model that represents the subsurface structure.

3. What factors can affect the accuracy of a 2D velocity structure?

The accuracy of a 2D velocity structure can be affected by factors such as the quality of the seismic data, uncertainties in the seismic interpretation, and assumptions made during the modeling process. In addition, the heterogeneity and anisotropy of the subsurface can also introduce errors in the velocity model.

4. How is a 2D velocity structure used in exploration and production?

2D velocity structures are used in exploration and production to aid in the interpretation of seismic data and to improve the accuracy of subsurface imaging. They are also used in reservoir characterization to better understand the properties and behavior of hydrocarbon reservoirs.

5. Can a 2D velocity structure be converted into a 3D model?

Yes, a 2D velocity structure can be converted into a 3D model by incorporating additional seismic data and using more advanced modeling techniques. However, the accuracy of the 3D model will depend on the quality and resolution of the input data.

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