61.  It is the return of El Nino, the marked warming of ocean surface waters in the eastern tropical Pacific that appears every three to seven years.

62.  It has also submitted plans for long-term monitoring of ground and surface water.

63.  Large seabed features like deep rifts and high mountain ranges exert gravitational influences on surface waters miles above, and these influences can be read with sensitive instruments.

64.  Last year an environmental group charged that major faults in the ground at one site had allowed radioactive materials to move up toward surface waters.

65.  Lewis says he learned of the prescription drugs in surface water while reading articles in the scientific literature and suggested that New Mexico set up a surveillance program.

66.  Meanwhile, high pressure becalmed Atlantic winds, limiting ocean stirring, which stopped the mixing of surface waters with cooler waters below.

67.  Moreover, when the wind blows and stirs the ocean in spring, surface water mixes down and colder water from below rises to take its place.

68.  Moreover, in the absence of mixing, surface waters remained at the surface, allowing the sun to continually boost ocean tepidity.

69.  Moreover, the salinity of ocean surface water was low, showing that the water was mixed with an unusually large proportion of fresh water from melting ice.

70.  Most flying fishes belong to the family Exocoetidae and live in the surface waters of all tropical oceans.