ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • SPACECRAFT INSTRUMENTATION  (6)
  • Earth Sciences  (1)
  • 1
    facet.materialart.
    Unknown
    Saline water intrusion from deep artesian sources in McGregor Isles area of Lee County, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1206 | 3 | 2011-09-29 20:58:25 | 1206 | Florida Geological Survey
    Details
    Publication Date: 2021-07-06
    Description: Upward leakage of saline water from an artesian aquifer below 1,500 feethas caused an increase in chloride concentration in the lower Hawthorn aquiferfrom less than 1,000 mg/1 (milligrams per liter) to values ranging from about1,300 to 15,000 mg/1. Similarly the higher temperatures of the intruding waterhas caused an increase in water temperatures in the aquifer from 82"F to valuesranging from 83 to 93"F. The intruding water moves upward either through theopen bore hole of deep wells or test holes, or along a fault or fracture system,which has been identified in the area. From these points of entry into the lowerHawthorn aquifer, the saline water spreads laterally toward the south andsoutheast, but is generally confined to components of the fault system.The saline water moves upward from the lower Hawthorn aquifer into theupper Hawthorn aquifer through the open bore hole of wells, which connect theaquifers. This movement has resulted in an increase in chloride from less than200 mg/1 in the unaffected parts of the upper Hawthorn aquifer to valuescommonly ranging from about 300 to more than 3,000 mg/1 in parts of theaquifer affected by upward leakage. The upper Hawthorn aquifer is the principalsource of ground-water supply for public water-supply systems in western LeeCounty.Similar effects have been noted in the water-table aquifer, where chlorideincreased from less than 100 to concentrations ranging from about 500 to morethan 5,000 mg/1. This was caused by the downward infiltration of waterdischarged at land surface from wells tapping the lower Hawthorn aquifer.The spread of saline water throughout most of the McGregor Isles area iscontinuing as of 1971.(40 page document)
    Keywords: Oceanography ; Limnology ; Earth Sciences ; saline intrustion ; Florida ; Lee County
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    The Goddard High Resolution Spectrograph: Instrument, goals, and science results (1994)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The Goddard High Resolution Spectrograph (GHRS), currently in Earth orbit on the Hubble Space Telescope (HST), operates in the wavelength range 1150-3200 A with spectral resolutions (lambda/delta lambda) of approximately 2 x 10(exp 3), 2 x 10(exp 4), and 1 x 10(exp 3). The instrument and its development from inception, its current status, the approach to operations, representative results in the major areas of the scientific goals, and prospects for the future are described.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Astronomical Society of the Pacific, Publications (ISSN 0004-6280); 106; 702; p. 890-908
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Second generation spectrograph for the Hubble Space Telescope (1986)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The preliminary design for the Space Telescope Imaging Spectrograph (STIS), which has been selected by NASA for definition study for future flight as a second-generation instrument on the Hubble Space Telescope (HST), is presented. STIS is a two-dimensional spectrograph that will operate from 1050 A to 11,000 A at the limiting HST resolution of 0.05 arcsec FWHM, with spectral resolutions of 100, 1200, 20,000, and 100,000 and a maximum field-of-view of 50 x 50 arcsec. Its basic operating modes include echelle model, long slit mode, slitless spectrograph mode, coronographic spectroscopy, photon time-tagging, and direct imaging. Research objectives are active galactic nuclei, the intergalactic medium, global properties of galaxies, the origin of stellar systems, stelalr spectral variability, and spectrographic mapping of solar system processes.
    Keywords: SPACECRAFT INSTRUMENTATION
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    In-flight performance of the IUE (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: A report on the initial performance of the IUE satellite, launched in January, 1978, is given. Attention is given to optical performance, camera performance, background corrections, photometric performance, and data reduction. Samples of high-dispersion and low-dispersion spectra are shown. A remaining problem of proper separation of high dispersion orders in data reduction is discussed.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Nature; 275; Oct. 5
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unknown
    The IUE spacecraft and instrumentation (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The paper describes the general design, instrumentation, and ground control system of the International Ultraviolet Explorer (IUE) satellite, which will serve as an astronomical observatory providing both high and low resolution UV spectra of sources other than the sun. Basic data are given on the telescope, the UV-visible converter, the spectrograph optics, the camera response, and the communications systems.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Nature; 275; Oct. 5
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 6
    facet.materialart.
    Unknown
    The International Ultraviolet Explorer (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The instrumentation and functioning of the IUE are discussed. The design of the telescope, fine error sensors, echelle spectrographs, and television cameras, as well as their integration, is described. The optical characteristics of the IUE are listed and the schematic arrangement of the detector is depicted. Sources of background noise are assessed, including the thermionic effects in the UV converters and television tubes, radiation from the earth's trapped electron belts, wide angle white light scattering from the earth and sun, scattering of dispersed light caused by low dispersion gratings, photometric calibration, and photometric stability. IUE sensitivity changes during the first three years of operation are shown together with sensitivity curves for short and long wavelengths. Modes of wavelength determination are considered.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Ultraviolet and vacuum ultraviolet systems; Apr 21, 1981 - Apr 22, 1981; Washington, DC
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 7
    facet.materialart.
    Unknown
    Progress report on the high resolution spectrograph for the Space Telescope (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The instrument design is complete and many components and subsystems have been manufactured and tested. Solar-blind, multichannel, pulse counting detectors for two ultraviolet spectral bands have been developed and satisfactory flight units have been chosen. A large, lightweight graphite-epoxy optical bench, utilizing fingerplate joints with no metallic parts in order to minimize thermal expansion, has been built. Tests of the engineering model torque-motor-driven grating carrousel indicate that this critical system exceeds tight specifications for accurate and repeatable angular positioning. A complement of large, high-frequency gratings and an echelle is being completed in several laboratories. Software resident in a computer on the spacecraft will control the spectrograph with the capability to alter procedures in response to real-time evaluation of the data.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Ultraviolet and vacuum ultraviolet systems; Apr 21, 1981 - Apr 22, 1981; Washington, DC
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...