Alphabetical listing of categories: O

a b c d e f g h i j k l m n O p q r s t u v w x y z

Number of information resources is shown in parentheses after each term.

field observation -> field inventory and monitoring (17) weather observations (2) -> atmospheric and climatic processes WITH field inventory and monitoring earthquake occurrence maps (8) -> earthquake occurrences WITH maps and atlases earthquake occurrences (21) ocean-atmosphere interaction (1) ocean characteristics (2) ocean mixed-layer depth -> ocean characteristics (2) geological oceanography -> marine geology (1) oceanography -> ocean sciences (4) physical oceanography -> ocean sciences (4) ocean sciences (4) ocean surface characteristics -> ocean characteristics (2) ocean temperature (2) bodies of water -> hydrographic features (10) oil wells -> wells (4) open pit mines -> mine sites (1) ore deposits (metallic) -> metallic mineral resources (1) metallic ores -> metallic mineral resources (1) organism groupings (non-taxonomic) (3) biological organisms -> organisms (7) organisms (7) orienteering -> geolocation measurement (1) Ostracoda -> ostracodes (5) ostracodes (5) ostracods -> ostracodes (5) outfall -> contamination and pollution (2) overfalls -> hydrographic features (10) intermittent oxbow lakes -> lakes (4) oxbow lakes -> lakes (4)