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Anatahan is roughly elliptical in shape, with a length of 9 kilometers (5.6 mi) and a width of 4 km (2.5 mi) and an area of 33.9 km 2 (13.1 sq mi). The island is the summit of a stratovolcano which reaches an altitude of 790 m (2,592 ft) above sea level at its highest peak.
The elongate, 9-km-long island of Anatahan in the central Mariana Islands consists of large stratovolcano with a 2.3 x 5 km, E-W-trending compound summit caldera. The larger western portion of the caldera is 2.3 x 3 km wide, and its western rim forms the island's 790-m high point.
May 11, 2017 · Anatahan, in the Northern Mariana Islands, only measures around 13 square miles, with one of the archipelago’s most active volcanoes at its very center.
Anatahan is located 120 km (80 miles) north of Saipan Island and 320 km (200 miles) north of Guam. The island is about 9 km (5.6 miles) long and 3 km (2 miles) wide. Anatahan is a stratovolcano containing the largest known caldera in the Northern Mariana Islands.
Dec 9, 2021 · The island is only a tiny fraction (about 1%) of the volcano's entire volume, which rises 3700 m from the sea floor and has a basal diameter of 35 km. It is topped by a 5x2.3 km wide E-W elongated summit caldera.
Magnitude threshold was greater than 0.5 for distances less than 10 km. Events with distances less than 40 km may be volcanically related and located within ~10 km of Anatahan at varying depths beneath the island (the 10 km distance also includes Sarigan Island, N of Anatahan).
May 3, 2010 · The elongated, 9-km-long island of Anatahan in the central Mariania Islands consists of two coalescing volcanoes with a 2.3 x 5 km, E-W-trending summit depression formed by overlapping summit calderas.
