The Russian government on Tuesday announced that it had delivered “ample scientific data” to the United Nations to back its claim to more than 460,000 square miles of Arctic territory and the wealth of energy, gems and precious metals believed to lie within.

Moscow also is asserting ownership of the emerging Northern Sea Route, the potentially lucrative seasonal shipping route opening above its northern coastline as Arctic ice melts.

Russia was the first to claim the Arctic sea shelf as sovereign territory in a thwarted bid in 2002, but the United States, Canada, Denmark and Norway also are pursuing jurisdiction over seabed in the Arctic, where a quarter of the world’s remaining oil and gas reserves may be embedded.

More at the Los Angeles Times