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On September 10, Kanlaon produced its highest volume of sulfur dioxide emissions since 2009, at 9,985 tonnes, prompting PHIVOLCS to raise concern over its possible first magmatic eruption since 1902. [14] The record was surpassed the next day, when 11,556 tons of sulfur dioxide was emitted. [15]
Elevated sulfur dioxide emissions are typically associated with rising magma and may indicate the potential for further volcanic activity. [45] As of January 11, 2025, Kanlaon Volcano, located on Negros Island in the Philippines, remains under Alert Level 3 as declared by the Philippine Institute of Volcanology and Seismology (Phivolcs). This ...
Taal Volcano (IPA:; Tagalog: Bulkang Taal) is a large caldera filled by Taal Lake in the Philippines. [1] Located in the province of Batangas about 50 kilometers (31 mi) south of Manila, the volcano is the second most active volcano in the country with 38 recorded historical eruptions, all of which were concentrated on Volcano Island, near the middle of Taal Lake. [3]
Release of 17 megatons of sulfur dioxide into the atmosphere, causing global cooling by 0.5 °C (0.9 °F) between 1991 and 1993 [3] Lahars and mudflows inundated some portions of Pampanga, Tarlac, and Zambales after the eruption.
Sulfur dioxide is the product of the burning of sulfur or of burning materials that contain sulfur: S 8 + 8 O 2 → 8 SO 2 , ΔH = −297 kJ/mol To aid combustion, liquified sulfur (140–150 °C (284–302 °F) is sprayed through an atomizing nozzle to generate fine drops of sulfur with a large surface area.
Thousands of small earthquakes occurred beneath Pinatubo through April, May and early June and many thousand of tons of noxious sulfur dioxide gas were also emitted by the volcano. [7] From June 7 to 12, the first magma reached the surface of Mount Pinatubo.
Sulphur dioxide (SO 2) absorbs strongly in the ultraviolet wavelengths and has low background concentrations in the atmosphere. These characteristics make sulphur dioxide a good target for volcanic gas monitoring. It can be detected by satellite-based instruments, which allow for global monitoring, and by ground-based instruments such as DOAS.
September 20 – The Philippines becomes one of the signatories of the United Nations High Seas Treaty under the 1982 UN Convention on the Law of the Sea. [183] September 22 – The Taal Volcano in Batangas releases elevated levels of sulfur dioxide and vog, resulting in school closures, including in Metro Manila, and residents avoiding outdoor ...