2024年4月28日 · For 123 years, Mount St. Helens was quiet. Then, in March 1980, the volcano in Washington state began to rumble. It erupted on May 18, 1980, forever dividing the history of the region into two parts: Mount St. Helens before and after the catastrophic eruption. In the aftermath, the area surrounding the volcano dramatically changed.

2023年8月11日 · However, after the eruption, the land was transferred to the United States Forest Service, which later established the Mount St Helens National Volcanic Monument to preserve and study the area. Lessons learned and ongoing monitoring Mount St. Helens, Gifford Pinchot National Forest, 2015, from Cascade Range, Extreme Terrain. iStock

Mount St. Helens (known as Lawetlat'la to the local Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, [1] in the Pacific Northwest region of the United States. It lies 52 miles (83 km) northeast of Portland, Oregon, [2] and 98 miles (158 km) south of Seattle. [3] …

2010年5月20日 · Mount St. Helens, Before the Blast Mount St. Helens looks serene in a photograph taken from the shores of Spirit Lake in Washington State in 1973—a few years before the volcano's infamous 1980 ...

40 years after the massive volcanic eruption of Mount St. Helens in Washington state, NASA reviews photography captured by Landsat satellites of the area fro...

2021年11月3日 · Mount St. Helens, as it looked the day before its massive eruption, on May 17, 1980. On March 27, after hundreds of additional earthquakes, the volcano produced its first eruption in over 100 years. Steam explosions blasted a 60- to 75-m (200- to 250-ft) wide crater through the volcano’s summit ice cap and covered the snow-clad southeast ...

2005年3月2日 · Mount St. Helens erupted on May 18, 1980, devastating more than 150 square miles of forest in southwestern Washington state. This animation shows Landsat images of the Mount St. Helens area in 1973, 1983, and 2000, illustrating the destruction and regrowth of the forest. The 1983 image clearly shows the new crater on the northern slope where the eruption occurred, the rivers and lakes covered ...

2018年5月9日 · The book "Mount St. Helens: The Eruption and Recovery of a Volcano" notes that 70 unauthorized planes violated airspace restrictions over the mountain on March 30 alone, citing the FAA as its source.

2020年5月18日 · The summit of Mount St. Helens, shown in this 1975 photo, was once a peaceful place where climbers went for a stroll after climbing the mountain that once stretched 9,677 feet into the sky. That was before May 18, 1980 when almost 1,400 feet of the mountain disappeared during a series of violent explosions and eruptions.

Mt. St. Helens, Before and After Photos and Maps. Topographic maps of mountains typically don’t change much over the years. Even volcanoes are unlikely to change for thousands of years (with the exception of receding glaciers these days). Mount St. Helens is a different story. When it blew on May 18th 1980, the topography of the mountain and ...