## root-mean-square velocity

## root-mean-square velocity

**root-mean-square velocity (V_{rms})** The velocity of waves through subsurface media down to the nth interface, such that

*V*

_{rms}= (Σ

*V*

_{int}

^{2}

*t*

_{i}/Σ

*t*

_{i})

^{½}, where

*V*

_{int}and

*t*

_{i}are the interval velocity and single-travel time through the ith interval.

*V*

_{rms}is usually derived from normal moveout measurements from a T2−X2 graph, and is commonly several percent larger than the corresponding average velocity.

#### More From encyclopedia.com

Square
,
square / skwe(ə)r/ • n. 1. a plane figure with four equal straight sides and four right angles. ∎ a thing having such a shape or approximately such a…
Tie
,
tie / tī/ • v. (ty·ing / ˈtī-ing/ ) 1. [tr.] attach or fasten (someone or something) with string or similar cord: they tied Max to a chair her long h…
Root (mathematics)
,
root In mathematics, fractional power of a number. The square root of a number, x, is written as either √x or x½. The fourth root of x may be written…
Prop Root
,
prop root Any of the modified roots that arise from the stem of certain plants and provide extra support. Such stems are usually tall and slender and…
Anticlimax
,
an·ti·cli·max / ˌantēˈklīˌmaks; ˌantī-/ • n. a disappointing end to an exciting or impressive series of events. DERIVATIVES: an·ti·cli·mac·tic / -klī…
Septicemia
,
sep·ti·ce·mi·a / ˌseptiˈsēmēə/ (Brit. sep·ti·cae·mi·a) • n. blood poisoning, esp. that caused by bacteria or their toxins. DERIVATIVES: sep·ti·ce·mic…