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Strontium isotope ratios of lavas from Hawaiʻi were analyzed by thermal ionization mass spectrometry (TIMS) at the Southwest Isotope Research Laboratories of the U.S. Geological Survey (USGS) in Denver. There were at total of 427 analyses of samples obtained from the field, the collections of the USGS Hawaiian Volcano Observatory (HVO), the University of Hawaiʻi, and the Smithsonian Institution. The samples originated from Kīlauea (historical and prehistoric summit and rift zone lavas), Mauna Loa (historical lavas), and Lōʻihi (submarine lavas of unknown age). Data for associated reference materials are described in the process steps. The Sr isotope ratios may be used to test models for the magmatic plumbing system...
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We quantified the availability of breeding habitat of the endangered Hawaii Akepa (Loxops coccineus). The species is thought to nest excusively in natural cavities within mature ohia (Metrosideros polymorpha) trees but birds commonly occur in short stature trees that presumably do not have any natural cavities because of their polyploidal (many-branched) structure. To test this hypothesis we searched for cavities in trees where akepa forage and we measured diameter of each stem of each tree examined. The habitat is in montane areas of Hawaii Volcanoes National Park on Mauna Loa volcano.We surveyed 57 plots, 49 in montane woodland and 8 in closed-canopy forest. Six tree cavities were detected in the 214 sampled trees:...
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We quantified the availability of breeding habitat of the endangered Hawaii Akepa (Loxops coccineus). The species is thought to nest excusively in natural cavities within mature ohia (Metrosideros polymorpha) trees but birds commonly occur in short stature trees that presumably do not have any natural cavities because of their polyploidal (many-branched) structure. To test this hypothesis we searched for cavities in trees where akepa forage and we measured diameter of each stem of each tree examined. The habitat is in montane areas of Hawaii Volcanoes National Park on Mauna Loa volcano.We surveyed 57 plots, 49 in montane woodland and 8 in closed-canopy forest. Six tree cavities were detected in the 214 sampled trees:...
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We quantified the availability of breeding habitat of the endangered Hawaii Akepa (Loxops coccineus). The species is thought to nest excusively in natural cavities within mature ohia (Metrosideros polymorpha) trees but birds commonly occur in short stature trees that presumably do not have any natural cavities because of their polyploidal (many-branched) structure. To test this hypothesis we searched for cavities in trees where akepa forage and we measured diameter of each stem of each tree examined. The habitat is in montane areas of Hawaii Volcanoes National Park on Mauna Loa volcano.We surveyed 57 plots, 49 in montane woodland and 8 in closed-canopy forest. Six tree cavities were detected in the 214 sampled trees:...
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This zip folder contains ASCII text files of vectors at the specified volcano at 12-hour intervals, from January 1, 1990 through December 28, 2009. The wind vectors are divided into five files, names by their elevation range above sea level in the atmosphere: 00-05km.txt; 05-11km.txt; 11-16km.txt; 16-24km.txt; and 24-30km.txt. The zip folder also contains a subfolder "figures", with Wind rose plots of wind direction and speed over this time period. The plots are by season, and by elevation, given a total of 20 plots (4 seasons, 5 elevation ranges). A summary plot is also included which gives the year-round wind pattern at the volcano, at 0-5 km elevation. Plots are in both jpg and pdf format.
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This USGS data release includes two ESRI polyline shapefiles (file_names.shp) describing the describing the steepest-descent lines calculated at two levels of detail (See Process Step for explanation). To increase access to these data, KMZ (Compressed Keyhole Markup Language) versions of the polyline feature layers are included in this release (file_names.kmz). In addition to these data layers, two supplementary data layers from the Big Island Mapping Project (BIMP) showing lava flows originating on Mauna Loa and Kilauea volcanoes, originally published in Trusdell, Wolfe, and Morris (2006), are included for context and reference. Both ESRI polygon shapefiles and KMZ versions of these files are included, naming conventions...


    map background search result map search result map Steepest-Descent Lines for Kīlauea, Mauna Loa, Hualālai, and Mauna Kea Volcanoes, Hawaiʻi Wind rose plots for the volcano: 332020 Mauna Loa USGS 1:62500-scale Quadrangle for Mauna Loa, HI 1928 USGS 1:62500-scale Quadrangle for Mauna Loa, HI 1928 USGS 1:62500-scale Quadrangle for Mauna Loa, HI 1928 USGS 1:62500-scale Quadrangle for Mauna Loa, HI 1928 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1993 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1966 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1978 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1981 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1981 HAVO Montane Ohia Diameter and Cavity Data 2017 Occurrence of natural nest cavities in montane ohia trees in Hawaii Volcanoes National Park Sampling locations for occurrence of natural nest cavities in montane ohia trees in Hawaii Volcanoes National Park Strontium isotope ratios of lavas from Kīlauea, Mauna Loa, and Lōʻihi Volcanoes, Hawaiʻi HAVO Montane Ohia Diameter and Cavity Data 2017 Occurrence of natural nest cavities in montane ohia trees in Hawaii Volcanoes National Park Sampling locations for occurrence of natural nest cavities in montane ohia trees in Hawaii Volcanoes National Park USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1993 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1966 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1978 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1981 USGS 1:24000-scale Quadrangle for Mauna Loa, HI 1981 USGS 1:62500-scale Quadrangle for Mauna Loa, HI 1928 USGS 1:62500-scale Quadrangle for Mauna Loa, HI 1928 USGS 1:62500-scale Quadrangle for Mauna Loa, HI 1928 USGS 1:62500-scale Quadrangle for Mauna Loa, HI 1928 Strontium isotope ratios of lavas from Kīlauea, Mauna Loa, and Lōʻihi Volcanoes, Hawaiʻi Steepest-Descent Lines for Kīlauea, Mauna Loa, Hualālai, and Mauna Kea Volcanoes, Hawaiʻi