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ID 9873, Mineral Industry Surveys Fluorspar in Second Quarter, pertaining to the Crystal Mountain Mine, Frog Pond Mining District, Ravalli County, Montana
Montana Bureau of Mines and Geology, John W. Taber Collection, Document ID 9873
ID 11628, Butte and Berkeley Pit, pertaining to the Crystal Mountain Mine, Frog Pond Mining District, Ravalli County, Montana
Montana Bureau of Mines and Geology, John W. Taber Collection, Document ID 11628
ID 14381, Antimony in August 1951, Mineral Industry Surveys, pertaining to the Crystal Mountain Mine, Frog Pond Mining District, Ravalli County, Montana
Montana Bureau of Mines and Geology, John W. Taber Collection, Document ID 14381
Strong evidence on climate change underscores the need for actions to reduce the impacts of sea-level rise. Global mean sea level may rise 0.18–0.48 m by mid-century1, 2 and 0.5–1.4 m by the end of the century2. Besides marine inundation, it is largely unrecognized that low-lying coastal areas may also be vulnerable to groundwater inundation, which is localized coastal-plain flooding due to a rise of the groundwater table with sea level. Measurements of the coastal groundwater elevation and tidal influence in urban Honolulu, Hawaii, allow estimates of the mean water table, which was used to assess vulnerability to groundwater inundation from sea-level rise. We find that 0.6 m of potential sea-level rise causes substantial...
Downscaling of Climate Change in the Hawaii Region Using CMIP5 Results: On the Choice of the Forcing Fields
The Weather Research and Forecasting (WRF) model has been configured as a regional climate model for the Hawaii region (HRCM) to assess the uncertainties associated with the pseudo–global warming (PGW) downscaling method using different warming increments from phase 5 of the Coupled Model Intercomparison Project (CMIP5) model experiments. Results from 15-km downscaling experiments using warming increments from 10 individual CMIP5 models for the two warming scenarios representative concentration pathway 4.5 (RCP4.5) and 8.5 (RCP8.5) are compared with experiments using multimodel mean warming increments. The results show that changes in 2-m temperatures, 10-m wind speed, rainfall, water vapor path, and trade wind...
Climate-associated population declines reverse recovery and threaten future of an iconic high-elevation plant
Although climate change is predicted to place mountain-top and other narrowly endemic species at severe risk of extinction, the ecological processes involved in such extinctions are still poorly resolved. In addition, much of this biodiversity loss will likely go unobserved, and therefore largely unappreciated. The Haleakalā silversword is restricted to a single volcano summit in Hawai‘i, but is a highly charismatic giant rosette plant that is viewed by 1–2 million visitors annually. We link detailed local climate data to a lengthy demographic record, and combine both with a population-wide assessment of recent plant mortality and recruitment, to show that after decades of strong recovery following successful management,...