_:b1218217 "The permanent marine thermocline describes a marine thermocline found in temperate to tropical latitudes, which marks the transition between warm waters and cold deep waters. The permanent thermocline separates the marine cold-water sphere and the marine warm-water sphere"^^ . _:b1218217 . _:b1218217 . _:b1218217 . _:b1218217 "ISBN:044482619X"^^ . _:b1218217 "PLB:plb"^^ .