Aniakchak

https://www.nps.gov/ania/index.htm https://en.wikipedia.org/wiki/Assateague_Island_National_Seashore Aniakchak National Monument and Preserve is a U.S. National Monument and National Preserve, consisting of the region around the Aniakchak volcano on the Aleutian Range of south-western Alaska. Given its remote location and challenging weather conditions, Aniakchak is one of the most wild and least visited places in the National Park System. This landscape is a vibrant reminder of Alaska's location in the volcanically active "Ring of Fire," as it is home to an impressive six mile (10 km) wide, 2,500 ft (762 m) deep caldera formed during a massive volcanic eruption 3,500 years ago. Located on the Alaska Peninsula, 450 miles southwest of Anchorage, Aniakchak National Monument and Preserve is inaccessible by road. Notoriously bad weather makes access to Aniakchak unpredictable. Drop-offs and/or pick-ups may be significantly delayed. King Salmon Visitor Center Located next door to the King Salmon Airport, the King Salmon Visitor Center provides information on the many federal public lands of Southwest Alaska, particularly those in the Bristol Bay area. A large collection of films is available for viewing and an Alaska Geographic bookstore sells maps, charts, videos, posters, clothing and more. This visitor center is located next to the passenger terminal at the King Salmon Airport. Floating the Gates of Aniakchak A lone raft floats the Aniakchak Wild River as it flows through the "Gates" A lone raft floats the Aniakchak Wild River as it flows through the "Gates" Aniakchak Caldera Aerial shot of Aniakchak Caldera Aerial shot of Aniakchak Caldera Black Nose, Aniakchak Caldera Black Nose, Aniakchak Caldera Black Nose, Aniakchak Caldera Maar Lake, Aniakchak Caldera Maar Lake, Aniakchak Caldera Maar Lake, Aniakchak Caldera The Gates of Aniakchak The Gates of Aniakchak The Gates of Aniakchak Subsistence The study of subsistence resources in parks has been a mix of long-term work and projects instigated by issues facing the Federal Subsistence Board. Winter hunting is an important subsistence activity in many Alaska communities and park areas. Science in Wilderness Marine Reserves ANILCA establishes the largest scientific laboratory...ever! A spawning salmon struggles to get back into the water. Balancing the Benefits and Impacts of Science in Alaska’s Wilderness Achieving consistency in permitting decisions across multiple units of the National Park System remains a constant challenge. When opportunities allow, park managers combine environmental compliance for related projects spanning several units, such as the installation of climate monitoring stations for the Inventory & Monitoring networks. A woman with long, dark hair, lilac shirt and jeans stands next to a climate monitoring station. In Celebration of ANILCA Former President, Jimmy Carter, offers a sentimental introduction to the 25th Anniversary Edition of Alaska Park Science and the Alaska National Interest Lands Conservation Act (ANILCA). Black and white photo of six white men standing in front of an old National Park Service Building. A History of Science in Alaska's National Parks National park units in Alaska precede the establishment of the National Park Service in 1916. The first park unit, Sitka National Monument, was conceived in 1908, and by the mid-1920s four national monuments along with Alaska’s first national park were part of the growing park system. Discover how the early 1900s and observations of a few helped to establish the National Park Service in Alaska. Black and white photo of Arno Cammerer sitting at his desk looking through papers. Old is Getting Older In the last 25 years, persistent archaeological survey and improved scientific techniques have resulted in new data which confirms that Alaska sites are actually much earlier than we once believed. NPS archaeologist works at Amakomanak site in Noatak National Preserve. Land Ownership in National Park System Units in Alaska and Possibilities for Mining and Other Developments There are over 54 million acres of National Park System units in Alaska, which is 65 percent of the entire National Park System. Although most of those lands are in federal ownership and are managed by the NPS, there are over two million acres of non-federally owned lands within those units. These non-federal lands are in private, state, borough, or municipal ownership. The existence of these lands creates the possibility of mining and other developments within the boundaries rustic buildings near a creek, hills and mountains in the distance NPS Geodiversity Atlas—Aniakchak National Monument & Preserve, Alaska Each park-specific page in the NPS Geodiversity Atlas provides basic information on the significant geologic features and processes occurring in the park. Links to products from Baseline Geologic and Soil Resources Inventories provide access to maps and reports. [Site Under Development] snow covered volcanic caldera Volcanic Hazards in Alaska’s National Parks There are over 100 volcanoes in Alaska, 54 of which are considered historically active, and 14 are found in Alaska national parks, preserves, and monuments. The Alaska Volcano Observatory monitors and conducts research on volcanoes in Alaska in order to better understand volcanic processes and determine the likelihood of future volcanic hazards, with a primary goal of informing the public about volcanic hazards and impending volcanic activity. Alaska Park Science 18(1), 2019. A snow covered volcanic peak. Duck-billed Dinosaurs (Hadrosauridae), Ancient Environments, and Cretaceous Beringia in Alaska’s National Parks This article presents new information from Aniakchak National Monument and Preserve on the Alaska Peninsula, that sheds light on the likely ancient environment that allowed the migration of one group of dinosaurs, the hadrosaurs (duck-billed dinosaurs), across Beringia during the Cretaceous. Alaska Park Science 17(1), 2018. An artists drawing of Hadrosaurs in Aniakchak. Small Mammals as Indicators of Climate, Biodiversity, and Ecosystem Change This is a time of rapid environmental changes in Alaska. Species that have evolved within tundra habitats over multiple glacial cycles are not only best adapted to high-latitude and high-elevation environments, but may also respond more slowly to change. Studies of small mammal communities could provide valuable insights to larger ecosystem changes. two marmots perched atop a large boulder POET Newsletter March 2013 Pacific Ocean Education Team (POET) newsletter from March 2013. Articles include: The Japan Tsunami Marine Debris Summary; Restoring "Plastic Beach" Back to Kamilo Point; Coming to a Beach Near You; and An Unexpected Visitor. dock on beach Conserving pinnipeds in Pacific Ocean parks in response to climate change The evolutionary record from previous climate perturbations indicates that marine mammals are highly vulnerable but also remarkably adaptable to climatic change in coastal ecosystems. Consequently, national parks in the Pacific, from Alaska to Hawaii, are faced with potentially dramatic changes in their marine mammal fauna, especially pinnipeds (seals and sea lions). black harbor seal Alaska Aviation Safety In Alaska, small planes are often the best way to get around but flying has its risks. Aviation safety requires more than just a pilot’s skill–it takes all of us. Learn more about aviation to increase the safety of your next park flight. An NPS pilot in a plane cockpit flying over a turquoise lake Series: Alaska Park Science - Volume 16 Issue: Science in Alaska's Arctic Parks The National Park Service manages five parks that fall partially or entirely within the Arctic tundra biome. These five parks encompass 19.3 million acres of land and constitute approximately 25% of the land area managed by the National Park Service nationwide. These are undeveloped places, with free-flowing rivers and wilderness at a massive scale. a group of muskox running across a field Series: Alaska Park Science - Volume 13 Issue 2: Mineral and Energy Development There’s no denying that energy and mineral extraction have been and will continue to be important across the North for a long time. Mining and energy-related industries provide direct and indirect employment for thousands of people, taxes and other revenues. Our need is for science, engineering, and scholarly research; to develop safe, effective, and affordable technologies; to protect, preserve, and restore the natural and human environment; and to record and communicate our history. aerial view of buildings and a pier sticking out into the ocean Series: The Legacy of ANILCA The Alaska National Interest Lands Conservation Act impacts the National Park Service in many ways. ANILCA stipulates the designation of wilderness, subsistence management, transportation in and across parklands, use of cabins, mining, archaeological sites, scientific research studies and more. Two men drag a harvest seal from icy blue waters across frozen ice. Series: Geologic Time Periods in the Cenozoic Era The Cenozoic Era (66 million years ago [MYA] through today) is the "Age of Mammals." North America’s characteristic landscapes began to develop during the Cenozoic. Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat-like carnivores and early horses, as well as ice age woolly mammoths. fossils on display at a visitor center Series: Copper River Basin Symposium - Wrangell-St Elias National Park and Preserve February 2020: With a theme of Tradition, Science, and Stewardship, the two-day symposium included keynote speakers, 26 short presentations, and a poster session. A panel discussion delved into opportunities in working with indigenous communities. Ahtna elders provided wisdom in daily welcomes, and there was a presentation by Copper River Stewardship Youth. Topics ranged widely from fisheries to archaeology to geology. As well as sharing knowledge, participants shared meals, stories, and ideas. Copper River Basin Symposium logo by Lindsay and Elvie Series: National Park Service Geodiversity Atlas The servicewide Geodiversity Atlas provides information on <a href="https://www.nps.gov/subjects/geology/geoheritage-conservation.htm">geoheritage</a> and <a href="https://www.nps.gov/subjects/geology/geodiversity.htm">geodiversity</a> resources and values all across the National Park System to support science-based management and education. The <a href="https://www.nps.gov/orgs/1088/index.htm">NPS Geologic Resources Division</a> and many parks work with National and International <a href="https://www.nps.gov/subjects/geology/park-geology.htm">geoconservation</a> communities to ensure that NPS abiotic resources are managed using the highest standards and best practices available. park scene mountains Series: Alaska Park Science, Volume 18, Issue 1, Understanding and Preparing for Alaska's Geohazards Alaska is the most geologically active part of North America. Much of the awe-inspiring landscapes of Alaska's parks are created by geologic processes. But sometimes, these processes can be hazardous. This issue explores the state of the science to understand geohazards in Alaska national parks. Alaska Park Science 18(1): 2019. A man jumps down a dune of volcanic ash. Series: Alaska Park Science - Volume 17, Issue 1. Migration: On the Move in Alaska Alaska is home to many amazing animal migrations. In this issue, you will read about caribou, salmon, Golden Eagles, Swainson's Thrushes, beluga whales, and more. Human migrations have also occurred here, from ancient Beringia to the Klondike Gold Rush. You can even read about now-extinct species from the Cretaceous and Pleistocene eras. Enjoy this issue of Alaska Park Science and read about migration. Alaska Park Science 17(1), 2018. Caribou swim across a river. Quaternary Period—2.58 MYA to Today Massive ice sheets advanced and retreated across North America during much of the Quaternary, carving landscapes in many parks. Bering Land Bridge National Preserve contains geologic evidence of lower sea level during glacial periods, facilitating the prehistoric peopling of the Americas. The youngest rocks in the NPS include the lava of Hawaii Volcanoes National Park and the travertine at Yellowstone National Park, which can be just a few hours old. fossil bone bed and murals of mammoths Cenozoic Era The Cenozoic Era (66 million years ago [MYA] through today) is the "Age of Mammals." North America’s characteristic landscapes began to develop during the Cenozoic. Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat-like carnivores and early horses, as well as ice age woolly mammoths. fossils on display in a visitor center Bumble Bees of Alaska: A Field Guide This field guide to bumble bees will help you identify these abundant and conspicuous pollinators, which are found across most of Alaska. They are well-adapted to cold, harsh climates and live in every habitat where there are flowers offering up pollen and nectar, including forests, shrublands, tundra, wetlands, riparian areas, beaches, and gardens. a bumble bee perched on tiny pink flowers Series: Pacific Ocean Education Team (POET) Newsletters From 2009 to 2015, the Pacific Ocean Education Team published a series of short newsletters about the health of the ocean at various National Park Service sites in and around the Pacific Ocean. Topics covered included the 2010 tsunami, marine debris, sea star wasting disease, ocean acidification, and more. Ocean waves wash in from the right onto a forested and rocky shoreline. Fossil Footprints Across Our Parks / Huellas Fósiles a Través de Nuestros Parques Join us on a virtual hike to see fossil footprints across our national parks! As we travel back in time, we’ll discover stories of fantastic pasts and learn that fossil footprints are worthy of protection for the future. <br><br> ¡Únase a nosotros en una caminata para ver huellas fósiles en nuestros parques nacionales! Mientras viajamos a través del tiempo, descubriremos historias de pasados fantásticos y aprenderemos que las huellas fósiles merecen ser conservadas para el futuro. Two primitive tetrapods, looking something like giant lizards walking through desert sand dunes. Volcanic Processes—Lahars Lahars are volcanic mudflows and are among the most destructive of volcanic phenomena. Lahars present significant geohazards since they can travel great distances down river valleys and impact population centers away from the immediate area of a volcano. wide river valley filled with sediment and snowy peaks in the distance Aniakchak Volcano – Shaping the Cultural and Physical Landscape of the Alaska Peninsula The landscape of Aniakchak is a vibrant reminder of Alaska's location in the volcanically active Ring of Fire. In spite of such violent volcanic events, the living world, animal and human, eventually adjusted, recovered, and endured. The history of Aniakchak Caldera exemplifies the destructive force of nature while also demonstrating the resiliency of people. A lake in the middle of a caldera with high walls all around Sub-Plinian Eruptions Sub-Plinian eruptions create high eruption columns that are unsteady. Pyroclastic flows and lahars also form during these eruptions from composite volcanoes. volcanic ash eruption Plinian Eruptions Plinian eruptions are more intense than Sub-Plinean eruptions. Eruption columns may extend into the stratosphere and spread out in an umbrella shape and produce widespread ash deposits. Pyroclastic flows and lahars also occur during these eruptions. black and white photo May 18, 1980 Mount St. Helens eruption Volcanic Craters Craters are present at many volcanic vents. The size and shape of volcanic craters vary a great deal from volcano to volcano, and they even change during the lifespan of an active volcano. Craters can become filled by lava domes or lava flows, and new craters may form during subsequent eruptions. cinder cone crater Crater Lakes Water lakes may exist in craters and calderas (large collapse features) as these depressions can become filled by rainwater or melting snow or ice, or be places where groundwater can accumulate at the surface. Crater lakes can be long-lived or ephemeral, and may contain fresh or acidic waters. crater lake and snowy rim Maars and Tuff Rings Maars and tuff rings are low-standing pyroclastic cones with large craters that usually form from highly-explosive eruptions caused by the interaction of magma with ground or surface waters. Ubehebe Crater in Death Valley National Park is a maar. lakeshore and tundra Fumaroles Fumaroles are places where steam and volcanic gases are emitted. They are present on most active volcanoes. The occurrence of fumaroles and other geothermal features such as hot springs, geysers, and mud pots are important signs that a volcano is active. steam vents on the crater rim Magmatic Eruptions Magmatic eruptions include fresh lava or tephra from a magma source. Magmatic eruptions range from quiet effusions of lava to extremely explosive eruptions that can blow apart mountains and send ash clouds around the globe. volcanic eruption with glowing lava seen at night Composite Volcanoes (Stratovolcanoes) Composite volcanoes are made up of both lava flows and pyroclastic deposits and usually experience multiple eruptions over long periods of time. Mount Rainier is a composite volcano. photo of a snow covered volcanic peak Volcanic Domes Lava domes are steep-sided rounded accumulations of highly viscous silicic lava over a vent. Some domes are part of composite volcanoes, but large ones can make up their own volcanoes. Lassen Peak is a dome. photo of a rounded hill of blocky rock Cinder Cones Cinder cones are typically simple volcanoes that consist of accumulations of ash and cinders around a vent. Sunset Crater Volcano and Capulin Volcano are cinder cones. photo of a dry grassy field with a cinder cone in the distance Series: Volcanic Features Volcanoes vary greatly in size and shape. Volcanoes also may have a variety of other features, which in turn, have a great range in diversity of form, size, shape, and permanence. Many volcanoes have craters at their summits and/or at the location of other vents. Some craters contain water lakes. Lakes of molten or solidified lava may exist on some volcanoes. Fumaroles and other geothermal features are a product of heat from magma reservoirs and volcanic gases. photo of a lava lake in a summit crater Plan Like a Park Ranger - 10 Tips for Visiting Alaska's National Parks Planning a visit to the National Parks of Alaska? Check out our top 10 tips and plan like a park ranger. two people camp next to a glacier Summit Calderas Summit calderas form on preexisting composite volcanoes that experience VEI 6-7 eruptions that cause their summits to collapse. Summit calderas may become filled with precipitation to form steady-stake lakes, although these lakes may also be drained if the caldera rim becomes breached. photo of a snow covered volcanic summit caldera Calderas Calderas are large collapse features that can be many miles in diameter. They form during especially large eruptions when the magma chamber is partially emptied, and the ground above it collapses into the momentary void. Crater Lake and Aniakchak Crater are calderas. photo of oblique aerial view of a volcanic caldera with snow and ice Series: Volcano Types Volcanoes vary in size from small cinder cones that stand only a few hundred feet tall to the most massive mountains on earth. photo of a volcanic mountain with snow and ice Explosive Calderas Explosive calderas result from violent eruptions of great quantities of silicic magmas. These eruptions produce massive eruption columns that extend into the stratosphere, and voluminous pyroclastic flows. Eruptions that produce explosive calderas generally range from 6 (Colossal) on the Volcanic Explosivity Index (VEI) to 8 super eruptions (Apocalyptic). digital oblique aerial image of a volcanic caldera Series: Volcanic Eruption Styles Categories in this traditional classification are based on the eruption styles of particular volcanoes. These magmatic eruption styles are listed in the order of increasing explosivity. volcanic eruption with glowing lava Pyroclastic Flows and Ignimbrites, and Pyroclastic Surges Pyroclastic flows and surges are among the most awesome and most destructive of all volcanic phenomena. Pyroclastic flow deposits are found in at least 21 units of the National Park System. photo of a cloud of ash and dust moving down a mountain side. Volcanic Ash, Tephra Fall, and Fallout Deposits Volcanic ash, pumice, and tephra ejected in volcanic eruptions ultimately falls back to Earth where it covers the ground. These deposits may be the thin dustings or may be many tens of feet (meters) thick near an eruptive vent. Volcanic ash and tephra can present geohazards that are present great distances from the erupting volcano. photo of a bluff with exposed fine-grained volcanic ash and pumice. Series: Volcanic Eruption Types The most fundamental way to characterize a volcanic eruption is whether it is magmatic, phreatic, or phreatomagmatic. volcanic eruption seen at a distance Series: Geologic Time—Major Divisions and NPS Fossils The National Park System contains a magnificent record of geologic time because rocks from each period of the geologic time scale are preserved in park landscapes. The geologic time scale is divided into four large periods of time—the Cenozoic Era, Mesozoic Era, Paleozoic Era, and The Precambrian. photo of desert landscape with a petrified wood log on the surface