( ( ( The factors ) ( that ( significantly ( affect ( ( the depth ) ( of descent ) ) ) ) ) ) ( ( include ( ( ( ( ( the ( mud density ) ) , ) ( depth ( of release ) ) ) , ) ( ( initial ( downward ( volume flux ) ) ) ( of ( ( ( ( ( the discharge ) , ) ( current strength ) ) and ) ( ocean stratification ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS factors)) (SBAR (WHNP (WDT that)) (S (ADVP (RB significantly)) (VP (VBP affect) (NP (NP (DT the) (NN depth)) (PP (IN of) (NP (NN descent)))))))) (VP (VBP include) (S (NP (NP (DT the) (NN mud) (NN density)) (, ,) (NP (NP (NN depth)) (PP (IN of) (NP (NN release)))) (, ,)) (NP (NP (JJ initial) (JJ downward) (NN volume) (NN flux)) (PP (IN of) (NP (NP (DT the) (NN discharge)) (, ,) (NP (JJ current) (NN strength)) (CC and) (NP (NN ocean) (NN stratification))))))) (. .)))
The factors that significantly affect the depth of descent include the mud density, depth of  release, initial downward volume flux of the discharge, current strength and ocean stratification.
(ROOT (S (NP (NNP Depth) (CC and) (NNP density)) (VP (VBP are) (NP (NP (DT the) (CD two) (NNS factors)) (SBAR (WHNP (WDT that)) (S (VP (VBP affect) (NP (NP (DT the) (NN pressure)) (PP (IN of) (NP (NNS fluids))))))))) (. .)))