( He ( ( ( is also ) ( very ( interested ( in ( how ( ( ( the ( violent escape ) ) ( of ( ( volatile compounds ) ( from magmas ) ) ) ) ( drives ( explosive ( volcanic eruptions ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBZ is) (ADVP (RB also)) (ADJP (RB very) (JJ interested) (PP (IN in) (SBAR (WHADVP (WRB how)) (S (NP (NP (DT the) (JJ violent) (NN escape)) (PP (IN of) (NP (NP (JJ volatile) (NNS compounds)) (PP (IN from) (NP (NNS magmas)))))) (VP (VBZ drives) (NP (JJ explosive) (JJ volcanic) (NNS eruptions)))))))) (. .)))
He is also very interested in how the violent escape of volatile compounds from magmas drives explosive volcanic eruptions.
(ROOT (S (NP (NP (DT The) (NN thickness)) (PP (IN of) (NP (NN magma)))) (VP (VBZ determines) (SBAR (IN whether) (S (NP (DT a) (JJ volcanic) (NN eruption)) (VP (MD will) (VP (VB be) (ADJP (JJ explosive))))) (CC or) (RB not))) (. .)))