Linked from
The 16 pages that link to Island arc, each with the reason it gives.
Volcanic arcBroader topic: It is the oceanic expression of a volcanic arc.
Partial meltingBroader topic: Water-assisted melting of mantle contributes to island-arc magmas.
ArchipelagoBroader topic: Subduction builds many archipelagos in curved volcanic belts.
Central Asian Orogenic BeltBroader topic: Many volcanic arcs were later accreted into the belt.