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- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/20%3A_Glaciers/20.02%3A_GlaciersThis page discusses glaciers as moving ice masses formed from snow, shaping landscapes through abrasion and acting as critical freshwater reservoirs. Their health is measured by mass balance and movem...This page discusses glaciers as moving ice masses formed from snow, shaping landscapes through abrasion and acting as critical freshwater reservoirs. Their health is measured by mass balance and movement patterns, with significant retreat noted since the Little Ice Age. Erosion creates various geological features, while meltwater contributes to landform development.
- https://geo.libretexts.org/Bookshelves/Geography_(Physical)/California_Geography_(Patrich)/05%3A_Water_as_a_Resource_and_as_a_conflict/5.02%3A_SOURCES_FOR_CALIFORNIAS_WATERCalifornia's water supply is primarily sourced from surface water and groundwater, driven by rainfall and snowpack. However, these resources are increasingly unreliable, leading to initiatives like de...California's water supply is primarily sourced from surface water and groundwater, driven by rainfall and snowpack. However, these resources are increasingly unreliable, leading to initiatives like desalination, exemplified by Catalina Island, which uses a mix of underground aquifers and desalinated seawater. Groundwater, vital during droughts, faces challenges like overdraft, contamination, and subsidence. Surface water management is complex.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/19%3A_Deserts/19.02%3A_DesertificationThis page discusses desertification, a process exacerbated by climate change and human activities, affecting 40% of Earth's land and leading to environmental and socio-economic issues. Countermeasures...This page discusses desertification, a process exacerbated by climate change and human activities, affecting 40% of Earth's land and leading to environmental and socio-economic issues. Countermeasures like sustainable practices and soil restoration are needed but face challenges. It highlights projects like the Regeneration Project in Ethiopia, which applies innovative grazing methods to restore grasslands and sequester CO2.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/18%3A_Climate_and_Climate_Change
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/06%3A_Surface_Water/6.01%3A_Earths_Fresh_WaterThis page discusses the vital role of water on Earth, covering its properties in solid, liquid, and gas states. It notes that 97% of Earth's water is saltwater, with just 3% fresh water, mainly as ice...This page discusses the vital role of water on Earth, covering its properties in solid, liquid, and gas states. It notes that 97% of Earth's water is saltwater, with just 3% fresh water, mainly as ice. The hydrologic cycle, driven by solar energy, moves water through evaporation, condensation, and precipitation. Concerns about groundwater overuse and the importance of water conservation policies are addressed.
- https://geo.libretexts.org/Bookshelves/Geography_(Physical)/California_Geography_(Patrich)/05%3A_Water_as_a_Resource_and_as_a_conflict/5.01%3A_INTRODUCTIONCalifornia's water resources are crucial to its development, supporting over 39 million people and irrigating vast farmland. The state's water system is the world's largest and most controversial, man...California's water resources are crucial to its development, supporting over 39 million people and irrigating vast farmland. The state's water system is the world's largest and most controversial, managing over 40 million acre-feet annually. Water rights are politically divisive, exacerbated by climate change predicting more droughts and alterations in precipitation. Debates focus on whether to redistribute water for urban and agricultural needs.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/06%3A_Surface_Water/6.06%3A_WetlandsThis page discusses wetlands as vital ecosystems characterized by water saturation and diverse vegetation, essential for water purification, flood control, and biodiversity. It highlights their roles ...This page discusses wetlands as vital ecosystems characterized by water saturation and diverse vegetation, essential for water purification, flood control, and biodiversity. It highlights their roles in climate change mitigation and wastewater management. Despite their ecological importance, wetlands are threatened by human activities leading to degradation. Conservation efforts are critical, with methods such as remote sensing for monitoring.
- https://geo.libretexts.org/Courses/Lumen_Learning/Earth_Science_(Lumen)/10%3A_Geologic_History/10.02%3A_Absolute_Ages_of_RocksThis page discusses methods for determining relative and absolute ages in geology, focusing on techniques like tree ring counting, ice core analysis, and varve study for recent events, alongside radio...This page discusses methods for determining relative and absolute ages in geology, focusing on techniques like tree ring counting, ice core analysis, and varve study for recent events, alongside radioactive decay for older rocks. Absolute dating provides specific ages through radiometric techniques, such as carbon-14, potassium-argon, and uranium-lead dating.
