Filters: Tags: Grand Canyon National Park (X) > Date Range: {"choice":"year"} (X)
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Lake Powell retains most of the phosphorus that it receives, leading to downstream phosphorus limitation. These data were compiled to examine controls on phosphorus cycling below Lake Powell in the Colorado River and from storm inputs from the Paria River. Objectives of our study were to determine how several forms of phosphorus, both organic and inorganic, were cycled under varying dissolved oxygen concentrations and pH, reflecting the range of values observed in the river over the years. These data represent nitrogen, phosphorus, calcium, and carbon concentrations, water quality parameters (pH, dissolved oxygen, temperature), sediment composition, total protein, and extracellular enzyme activity (alkaline phosphatase)....
Typical exposure of Hermit shale in Tapeats amphitheater. Northeast of Powell Plateau. Kaibab quadrangle. Graphics from top to bottom identify Kaibab limestone, Coconino sandstone, Hermit shale; d, e, f, subdivisions A, B, C, of Supai formation. This print is a halftone. Coconino County, Arizona. ca. 1920. Plate 24-B in U.S. Geological Survey. Professional paper 131. 1923.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Coconino County, Arizona,
Grand Canyon National Park,
Noble, L.F. Collection,
Photographers,
photo print
Grand Canyon National Park, Arizona. Mouth of the Colorado Canyon. 1904. Plate 7-B, U.S. Geological Survey Bulletin 352.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Grand Canyon National Park,
Lee, W.T. Collection,
National Parks,
Photographers,
photo print
Index card: Fossil fern from Hermit Shale, along Kaibab Trail. Grand Canyon National Park. Coconino County, Arizona. n.d.
Index card: Helicopter at Carbon Creek. Nankoweap Formation under Tapeats Sandstone. Grand Canyon National Park. Coconino County, Arizona. 1970.
These data were collected by the Grand Canyon Monitoring and Research Center (GCMRC) to support riparian vegetation monitoring along the Colorado River between Glen Canyon Dam and the full pool level of Lake Mead. The objectives of the GCMRC riparian vegetation monitoring program are to annually measure and summarize the status (composition and cover) of native and non-native vascular plant species within the riparian zone of the Colorado River between Glen Canyon Dam and Lake Mead, assess change in the vegetation composition and cover in the riparian zone, as related to geomorphic setting and dam operations, particularly flow regime, and collect data in a manner that can be used by multiple stakeholders and is...
Index card: Fossil tracks in Coconino Sandstone from Hermit Trail. Hand for scale. Grand Canyon National Park. Coconino County, Arizona. n.d.
Album caption: Panorama with photo nos. 75-76. Index card unavailable. Note: Panorama with cnw00075 and cnw00076
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Carkhuff, N.W. Collection,
Grand Canyon National Park,
Grand Canyon National Park Collection,
National Parks,
Photographers,
These data were compiled for assessing how geomorphic changes measured as topographic differences from repeat surveys represent measured and modelled estimates of aeolian sediment transport and dune mobility. Objective(s) of our study were to investigate whether topographic changes can serve as a proxy for aeolian transport and sediment mobility in dunefield environments. This was accomplished by relating topographic changes to modeled and observed estimates of sediment transport and dune mobility over months to decades within a partially vegetated dunefield starved of upwind sediment supplies. We specifically tested if topographic changes measured as net and total volume changes and topographic surface roughness...
Album caption and index card: View of the Colorado River overlooking Badger Creek rapids from a point above the left bank just north of Jackass Creek, 12.6 kilometers below Lees Ferry. Slopewash blankets the Hermit Shale Formation at river level here. The cliffs visible above consist of the Lower Permian Coconino Sandstone and overlying Toroweap Formations. At the time of this photograph, the discharge for the day at Lees Ferry was 2,799 m3/s. Note the large shrub surrounded by water just off the right bank. This shrub persists in the 1972 photograph (photo trm00021). (Altitude is 939 meters). Grand Canyon National Park. Coconino County, Arizona. June 19, 1952. (Photo by R.S. Leding, National Park Service). (Several...
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Coconino County, Arizona,
Grand Canyon National Park,
National Parks,
Photographers,
Turner, R.M. Collection,
Grand Canyon National Park, Arizona. Concentrations of jasper in carbonate rocks of the Supai Group. Horizontal surface of concentric layers of jasper in a massive bed of aphanitic limestone at the base of the Manakacha Formation in S B Canyon. Figure R3-E, U.S. Geological Survey Professional paper 1173.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Arizona,
Grand Canyon National Park,
National parks,
Supai group,
photo print
These data were compiled for assessing how geomorphic changes measured as topographic differences from repeat surveys represent measured and modelled estimates of aeolian sediment transport and dune mobility. Objective(s) of our study were to investigate whether topographic changes can serve as a proxy for aeolian transport and sediment mobility in dunefield environments. This was accomplished by relating topographic changes to modeled and observed estimates of sediment transport and dune mobility over months to decades within a partially vegetated dunefield starved of upwind sediment supplies. We specifically tested if topographic changes measured as net and total volume changes and topographic surface roughness...
Album caption and index card: Deposits of cryptocrystalline silica in carbonate rocks of the Supai Group and Pakoon Limestone, Grand Canyon region. D, Crust or shells of chert like, cryptocrystalline silica forming irregular and inconsistent structure pattern in limestone near base of Watahomigi Formation, Kaibab Trail.. Scale at top in centimeters. Grand Canyon National Park. Coconino County, Arizona. n.d. (Photo by L.M. Hinchliffe). Published as Figure R1-D in U.S. Geological Survey. Professional Paper 1173. 1982.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Coconino County, Arizona,
Grand Canyon National Park,
Hinchliffe, L.M. Collection,
National parks,
Pakoon limestone,
Trait-based approaches to vegetation analyses are becoming more prevalent in studies of riparian vegetation dynamics, including responses to flow regulation, groundwater pumping, and climate change. These analyses require species trait data compiled from the literature and floras or original field measurements. Gathering such data makes trait-based research time intensive at best and impracticable in some cases. To support trait-based analysis of vegetation along the Colorado River through Grand Canyon, a data set of 20 biological traits and ecological affinities for 179 species occurring in that study area was compiled. This diverse flora shares species with many riparian areas in the western USA and includes species...
Categories: Data,
Data Release - Revised;
Tags: Arizona,
Botany,
Coconino County,
Colorado River,
Ecological tolerances,
Album caption and index card: Fossil seed ferns -Supaia- in fossil fern quarry near Kaibab Trail. Pocket watch at left for scale. Grand Canyon National Park. Arizona. n.d. (Small light spot at upper left).
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Arizona (AZ),
Grand Canyon National Park,
Grand Canyon National Park Collection,
McKee, E. D. Collection,
Photographers,
Album caption and index card: Driftwood is still visible in the same location as before, in this more recent view, and many boulders are the same in both views. Much of the sand deposit is relatively unstable and devoid of plants. In this March view the flood-line community, composed mainly of western honey mesquite in this section of Upper Marble Canyon, is leafless and cannot be easily compared with its counterpart in the August 1923 photograph (photo no. 34). Western honey mesquite is first seen in the canyon only 11.5 kilometers upriver from here. Some of the plants (jointfir) on the talus slope at the right seem to be the same as those in the earlier view. The vegetation at the river's edge is predominantly...
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Coconino County, Arizona,
Grand Canyon National Park,
National Parks,
Photographers,
Turner, R.M. Collection,
Index card: Specimen fossil trilobite, Anona sp., from Bright Angel Shale, along Tonto Trail. Grand Canyon National Park. Coconino County, Arizona. n.d.
These data were compiled to model the effects of flow regime and bed grain size distributions on rates of gross primary production (GPP) in the Colorado River below Glen Canyon Dam, AZ, USA. The objectives of our study were to quantify daily and weekly scale effects of an experimental flow regime on GPP in the Colorado River. The experimental flow was conducted at Glen Canyon Dam from May-August in 2018, 2019, and 2020 and contrasted steady-low flows on weekend days with business-as-usual hydropeaking flows during weekdays. This data release only contains data through 2019. These data represent daily-scale estimates of GPP, discharge, turbidity, water depth, and canyon shading for eleven reaches on the Colorado...
These data are daily climate, water balance, and soil moisture data for 270 plots in the National Park Service (NPS) Southern Colorado Plateau Network (SCPN) Inventory & Monitoring (I&M) network. Climate data was collected from a gridded, daily climate dataset, Daymet (https://daymet.ornl.gov/). Climate, alongside field-collected soils (SoilDepthsByPlot.csv) and vegetation information, were then used to drive a point based, daily, multi soil-layer, ecosystem water-balance model, SOILWAT2 (https://github.com/DrylandEcology/SOILWAT2). SCPN plots were established to capture the range of ecosystem conditions present in this network. Plant communities of the SCPN are a vital sign for this region, enhancing habitat, stabilizing...
Categories: Data;
Tags: Arizona,
Aztec Ruins National Monument,
Bandelier National Monument,
Chaco Culture National Monument,
Colorado,
Album caption and index card: Most boatman agree that Lava Falls Rapids, which lies 288.5 kilometers below Lees Ferry, represents the greatest hazard to navigation on the Colorado River. This remarkable photograph was taken of the rapids from the right bank looking toward the mouth of Prospect Canyon. Flow in the river was approximately 1,473 m3/s. The great turbulence created when the water encounters erosional debris from Prospect Canyon is clearly seen. The large dark shrubs in this view were still present in 1976 (see photo trm00068). Some of the shrubs on the opposite bank are desert broom. (Altitude 511 meters). Geologist at left on rock for scale. Grand CAnyon National Park. Coconino County, Arizona. June...
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Coconino County, Arizona,
Grand Canyon National Park,
National Parks,
Photographers,
Turner, R.M. Collection,
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