A large earthquake (magnitude 6.1) hit 60 km SSW of Krakatau volcano Indonesia. The earthquake's focus was at a depth of 50 km and located in the Sunda Strait under Panaitan Island. Krakatau volcano has been erupting in 2009. The earthquake is related to the Sunda subduction zone. The earthquake was felt with an intensity of III-IV at Krakatau Volcano Observatory. According to the results recorded at Gunungapi Seismometer Krakatoa in Pasauran, the earthquake hit at 16:53:06 pm, and had a duration of 601 seconds, with a maximum amplitude of 70 mm and aftershocks at 17:01:24 had a duration of 171 seconds with a maximum amplitude of 69 mm. At Gede volcano observation post the earthquake was felt with an intensity of III, and had a duration of 300 seconds. People have been advised to stay alert to the occurrence of aftershocks, where the energy is usually smaller than the main earthquake. The earthquake did not cause a tsunami, because although the earthquake was centered in the ocean, its depth over 50 km and magnitude was not large enough to produce a deformation of the ocean floor.
More on Krakatau Volcano...
About John Seach
- John Seach
- John Seach is a scientist and the world's leading volcano adventurer. Over the past 24 years John has traveled to the world's most exciting volcanoes, and witnessed eruptions during trips to more than 200 volcanoes. John's work has been featured on award winning television programmes. John is the founder of "Volcano Live", the world's first volcano news and volcano travel website.