ISO]]>'> SMOW]]>'> ]> vanadium, a transition metallic element &ISO; country code for Vatican City State Virginia (US state) voluntary activity range &ISO; country code for Saint Vincent & Grenadines &ISO; country code for Venezuela volcanic explosivity index, a method of assessing the magnitude of volcanic eruptions Vegetation/Ecosystem Modelling and Analysis Project &ISO; country code for Virgin Islands (UK) virtual geomagnetic pole, a term used in palaeomagnetic studies &ISO; country code for Virgin Islands (USA) Vancouver Island, off the west coast of Canada visible light Very Long Baseline Interferometry very long chain, descriptor for fatty acids very low frequency (of electromagnetic energy) volcanic massive sulphide (deposits) &ISO; country code for Vietnam volatile organic compounds vapour pressure deficit vector quantization viscous remanent magnetization, the tendency for rocks containing ferromagnetic minerals to acquire a magnetic signature when exposed to a weak magnetic field for centuries artificially-prepared &SMOW;, Vienna, isotopic standard for measuring oxygen and hydrogen isotopes Vermont (US state) &ISO; country code for Vanuatu