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  • Other Sources  (1,489)
  • EARTH RESOURCES AND REMOTE SENSING  (643)
  • GEOPHYSICS  (467)
  • AEROSPACE MEDICINE  (199)
  • SPACECRAFT DESIGN, TESTING AND PERFORMANCE  (167)
  • Inorganic Chemistry
  • Organic Chemistry
  • Umweltmedizin
  • ddc:554.3
  • 1980-1984  (1,478)
  • 1945-1949  (3)
  • 1935-1939  (4)
  • 1920-1924  (4)
  • 1915-1919
  • 1980  (1,478)
  • 1948  (3)
  • 1938  (4)
  • 1921  (4)
  • 1915
Collection
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Language
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  • 1980-1984  (1,478)
  • 1945-1949  (3)
  • 1935-1939  (4)
  • 1920-1924  (4)
  • 1915-1919
Year
  • 1
    Publication Date: 2022-07-25
    Description: research
    Keywords: ddc:554.3
    Language: German
    Type: doc-type:article , publishedVersion
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  • 2
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    Publication Date: 2023-01-16
    Description: Die Rehbergschichten treten im linksrheinischen Buntsandstein zwischen Trifels- und Karlstalschichten auf. Es ist ein Wechsel von Felsbänken und Dünnschichten, wobei die Felsbänke die petrographischen Merkmale der Trifelsschichten, die Dünnschichten die sedimentologischen Merkmale der Unteren Karlstalschichten enthalten. Die Untergrenze der Rehbergschichten bildet die tiefste Lage von Dünnschichten (Scheidter Niveau). Die Obergrenze der Rehbergschichten bildet die stratigraphisch höchste Felsbank mit den petrographischen Merkmalen der Trifelsschichten oder des smi. Stratigraphisch markante Felsbänke bestehen innerhalb der Rehbergschichten nicht, eine stratigraphische und kartographische Unterteilung der Rehbergschichten ist nicht möglich. Genetisch werden die Rehbergschichten als Wechsel zwischen äolisch und fluviatil sedimentierten Schichten verstanden. Die Rehbergschichten tragen in der Landschaft weite Verebnungsflächen, wobei Verebnungen und Hangverflachungen in verschiedenen Niveaus übereinander vorkommen.
    Description: Abstract: The Rehberg sandstone is found in the Southwest German and Alsatian Buntsandstein between Trifels and Karlstal sandstones. Banquettes and lamelliform layers relieve one another, the banquettes containing the petrographic characteristics of the Tifels sandstone and the fine bedded layers the sedimentological characteristics of the lower Karlstal layers. The lower boundary of the Rehberg sandstone forms the lowest deposit of the fine bedded layers (Scheidter Niveau). The upper boundary of the Rehberg sandstone forms the stratigraphically highest banquette with the petrographic characteristics of the Trifels sandstone or the sny. Within the Rehberg sandstone stratigraphically noticeable banquettes do not exist. A Stratigraphie and cartographic division of the Rehberg sandstone is not possible. As far as genesis is concerned, the Rehberg sandstone are regarded as an alternation of eolian and fluviatile sedimented layers. The morphological structure of the landscape formed by the Rehberg sandstone shows wide peneplanations which occur at different levels.
    Description: research
    Keywords: ddc:554.3 ; Buntsandstein ; Pfalz ; Stratigraphie
    Language: German
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  • 3
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    Hessisches Landesamt für Bodenforschung, Wiesbaden
    In:  SUB Göttingen | KART B 104:5519 | KART H 86:5519
    Publication Date: 2022-11-22
    Description: Geologische Karte 1: 25 000 mit Erläuterungen. Digitalisat des FID GEO (Fachinformationsdienst Geowissenschaften der festen Erde), erstellt durch das GDZ (Göttinger Digitalisierungszentrum), Karte aus dem Bestand der SUB Göttingen.
    Description: map
    Description: DFG, SUB Göttingen
    Keywords: ddc:912 ; ddc:554.3 ; ddc:943.2 ; Geologische Karte ; Hungen
    Language: German
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  • 4
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    Hessische Geologische Landesanstalt, Darmstadt
    In:  SUB Göttingen | KART B 104:6118 | KART H 86:6118
    Publication Date: 2022-11-22
    Description: Geologische Karte 1: 25 000 mit Erläuterungen. Digitalisat des FID GEO (Fachinformationsdienst Geowissenschaften), erstellt durch das GDZ (Göttinger Digitalisierungszentrum), Karte aus dem Bestand der SUB Göttingen.
    Description: map
    Description: DFG, SUB Göttingen
    Keywords: ddc:912 ; ddc:554.3 ; Roßdorf ; Geologische Karte
    Language: German
    Type: doc-type:carthographicMaterial
    Format: 122
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  • 5
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    Kraatz, Berlin
    In:  SUB Göttingen | KART B 140:1860 | KART H 140:Degow
    Publication Date: 2024-02-21
    Description: Geologische Karte 1: 25 000 mit Erläuterungen. Digitalisat des FID GEO (Fachinformationsdienst Geowissenschaften), erstellt durch das GDZ (Göttinger Digitalisierungszentrum), Karte aus dem Bestand der SUB Göttingen. Koordinaten Vorlage: Nullmeridian Ferro E 033 20 - 033 30 / N 054 12 - 054 06.
    Description: map
    Description: DFG, SUB Göttingen
    Keywords: ddc:912 ; ddc:554.3 ; Geologische Karte
    Language: German
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    Format: 38
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  • 6
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    Kraatz, Berlin
    In:  SUB Göttingen | KART B 140:1760 | KART H 140:Lassehne
    Publication Date: 2024-02-21
    Description: Geologische Karte 1: 25 000 mit Erläuterungen. Digitalisat des FID GEO (Fachinformationsdienst Geowissenschaften), erstellt durch das GDZ (Göttinger Digitalisierungszentrum), Karte aus dem Bestand der SUB Göttingen. Koordinaten Vorlage: Nullmeridian Ferro E 033 20 - 033 30 / N 054 18 - 054 12.
    Description: map
    Description: DFG, SUB Göttingen
    Keywords: ddc:912 ; ddc:554.3 ; Geologische Karte
    Language: German
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  • 7
    Publication Date: 1948
    Description: Mehrzahl der autochthonen Malariaerregerübertragungen auf dem Gebiet von Brandenburg KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Norddeutschland ; 1939-1947 ; Umweltmedizin ; Infektionskrankheiten
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  • 8
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    In:  Deutsche Medizinische Wochenschrift 73, 515-518
    Publication Date: 1948
    Description: Anthropogene Veränderungen der Umweltbedingungen von Anophelesmücken KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Infektionskrankheiten
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  • 9
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    In:  Beihefte zum Archiv für Schiffs- und Tropenhygiene 25 () Beiheft 2
    Publication Date: 1921
    Description: Temperaturabhängigkeit von Malariaerregern in einheimischen Anophelesmücken KATASTER-BESCHREIBUNG: optimale Generation-Entwicklung bei einer permanenten Außentemperatur von 24-30°C, unter 15-16°C keine Entwicklung KATASTER-DETAIL:
    Keywords: Europa ; 1901-1903 ; Umweltmedizin ; Infektionskrankheiten
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  • 10
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    In:  Ärztliche Wochenschrift 3, 56-59
    Publication Date: 1948
    Keywords: Deutschland ; Umweltmedizin ; Infektionskrankheiten
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  • 11
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    In:  Klima - Wetter - Mensch, Woltereck, H. (Hrsg.), Verlag von Quelle und Meyer, Lepzig, S.127-229
    Publication Date: 1938
    Description: Bioklimatik einzelner Klimaelemente, atmosphärischer Zustände und Vorgänge KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Umweltmedizin
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  • 12
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    In:  Verlag von Julius Springer, Berlin
    Publication Date: 1938
    Description: Meteorotrope Krankheiten, Saisonkrankheiten KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Umweltmedizin
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  • 13
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    In:  Klima - Wetter - Mensch, Woltereck, H. (Hrsg.), Verlag von Quelle und Meyer, Lepzig, S.253-296
    Publication Date: 1938
    Description: Seuchenerreger und -überträger und der Einfluss von Temperatur, Feuchtigkeit und Jahresschwankungen KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Umweltmedizin
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  • 14
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    In:  Other Sources
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 217-218
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  • 15
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 215-216
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  • 16
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 214
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  • 17
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 209
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  • 18
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 210
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  • 19
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 207
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  • 20
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmopshere Res. Program; p 203-204
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  • 21
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmopshere Res. Program; p 201-202
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  • 22
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 199-200
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  • 23
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 196-197
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  • 24
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmopshere Res. Program; p 188
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  • 25
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 189-190
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  • 26
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 186-187
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  • 27
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 185
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  • 28
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 191-192
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  • 29
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program p179-180 (SEE N85-73711 19-46)
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  • 30
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 178
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  • 31
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 176-177
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  • 32
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program (SEE N85-73711 19-46)
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  • 33
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 171
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  • 34
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 172
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  • 35
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 170
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  • 36
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: Upper Atmosphere Res. Program; p 167-168
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  • 37
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 169
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  • 38
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 166
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  • 39
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 165
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  • 40
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 156-157
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  • 41
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 160
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  • 42
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 154-155
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  • 43
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 150-151
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  • 44
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 152-153
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  • 45
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 122
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  • 46
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 120-121
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  • 47
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 113-115
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  • 48
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 107
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  • 49
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 103-104
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  • 50
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 105-106
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  • 51
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 100-102
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  • 52
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 98-99
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  • 53
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 96-97
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  • 54
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    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 69-70
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  • 55
    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 21-22
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  • 56
    Publication Date: 2011-08-18
    Description: The Pioneer Venus probes approached Venus with high relative velocity. As they entered the atmosphere, they were rapidly decelerated by aerodynamic drag, and a great deal of heat was generated. To protect the probe structure and the scientific instruments, a carbon phenolic heat shield was placed on the front of the probes. Because the design of heat shields for planetary entry is a developing technology, thermocouples were placed in the heat shields so that actual and predicted heat shield performance could be compared. The function of the heat shield is discussed, the probe environments during entry into the Venusian atmosphere are described, and some results from the heat shield experiment are presented. It was found that for the most part, the heat shields performed better than expected.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Journal of Geophysical Research; 85; Dec. 30
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  • 57
    Publication Date: 2011-08-18
    Description: Experiments using ground-based measurements of canopy temperatures have shown that plant temperatures are good indicators of plant water stress, and thus are useful for assessing water requirements and predicting yields. An intensive 23-day airborne- and ground-measurement program was conducted in Phoenix, Arizona in 1977 to compare airborne-acquired wheat canopy temperatures with simultaneous ground measurements. For canopies that covered at least 85 percent of the soil surface, airborne measurements differed from ground measurements of plant temperature by less than 2 C. Regardless of the amount of plant cover, the airborne measurements were virtually identical to ground-nadir measurements, and thus represent a combination of plant temperature and solid background temperature.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Photogrammetric Engineering and Remote Sensing; 46; Feb. 198
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  • 58
    Publication Date: 2011-08-18
    Description: The NASCAP computer code is used to compute the charging and discharging characteristics of a typical communications satellite in geosynchronous orbit. For the case of a severe substorm, satellite surface differential charging in sunlight is found to be substantially less than that required to produce discharges in ground simulation studies. A discharge process is postulated involving discharges triggered at edges (or imperfection) followed by discharges to space. The characteristics of such discharges are parametrically varied to evaluate the possible effects on the satellite. It has been found that discharge characteristics inferred from satellite monitors could be caused by predicted space discharges, that single cell discharges to space can reduce surface potential over entire satellite, and that low-density electron trajectory computations indicate that discharge generated electrons may not return to the satellite by long trajectories. Current transients predicted do not agree with the available ground simulation results indicating that additional work must be done both analytically and experimentally to understand and fully explain these discrepancies.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
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  • 59
    Publication Date: 2011-08-18
    Description: Observations of waves stimulated by artificial injection inside an auroral arc by an electron accelerator mounted on the POLAR 5 sounding rocket are presented. The accelerator produced a pulsed electron beam with currents up to 130 mA and energies up to 10 keV; emissions after the end of beam injection were generated by perturbations in the ambient plasma near the accelerator during beam injection. These emissions were independent of the electron beam direction along the geomagnetic field. The high frequency emission observed after beam injection correlated with the passage through an auroral arc; the low frequency emissions after beam injection were concentrated in two bands below the lower hybrid frequency.
    Keywords: GEOPHYSICS
    Type: Planetary and Space Science; 28; Dec. 198
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  • 60
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    Publication Date: 2011-08-18
    Description: A mathematical model is developed to predict carboxyhemoglobin concentrations in regions of the body for short exposures to carbon monoxide levels expected during escape from aircraft fires. The model includes the respiratory and circulatory dynamics of absorption and distribution of carbon monoxide and carboxyhemoglobin. Predictions of carboxyhemoglobin concentrations are compared to experimental values obtained for human exposures to constant high carbon monoxide levels. Predictions are within 20% of experimental values. For short exposure times, transient concentration effects are predicted. The effect of stress is studied and found to increase carboxyhemoglobin levels substantially compared to a rest state.
    Keywords: AEROSPACE MEDICINE
    Type: Journal of Combustion Toxicology; 7; Nov. 198
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  • 61
    Publication Date: 2011-08-18
    Description: Measurements of average proton, helium, carbon, and oxygen fluxes at 6.6 earth radii are reported. The data represent averages obtained on ATS 6 between June 15 and Oct. 3, 1974. The energy range covered was 0.36-1.1 MeV for protons and approximately 1-4 MeV for the heavier ions. The results indicate that above about 1 MeV the heavier ion fluxes dominate over the proton flux on the energy/ion scale. Using two different spectral dependencies to fit the data, the carbon to oxygen concentration ratio for energies above 1 MeV was found to be 0.43 for the power law spectrum and 0.44 for the exponential spectrum. Thus in either case the abundance ratio is consistent with the solar origin of the particles. Similarly, the helium to oxygen concentration ratio is found to be 0.17 for the power law spectrum and 0.28 for the exponential spectrum. This is inconsistent with the solar wind ratio, which is about 10. The results quoted above are based on a very small portion of the distribution function above 1 MeV.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 85; Oct. 1
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  • 62
    Publication Date: 2011-08-18
    Description: Potential industrial sites were assessed using high and medium altitude aircraft photographs and supporting information on the 4,730 sq. km. (1,825 sq. mile) county. Factors evaluated include land availability, slope, site accessibility, soil drainage, other subsurface characteristics, and the expected physical as well as visual impacts on existing land use. Areas unavailable or unsuitable for development were eliminated first, and the remaining areas evaluated and the best sites identified.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Cornell Univ. Remote Sensing Program; 138 p
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  • 63
    Publication Date: 2011-08-18
    Description: A zoom stereoscope was used to interpret aerial color photographs of the Finger Lakes region near Bath, New York, and areas of conifers were delineated on acetate sheets. Scale was determined for each photograph and units were converted to acres. Photographically enlarged positive transparencies of imagery from LANDSAT bands 5,6, and 7 for the southern portion of the study area were placed in a cold additive viewer and registered with each other to provide a composite image. A green filter was used on band 5, blue on band 6, and red on band 7. Conifers appeared at dark, reddish purple. Average was determined using a grid. Results show that the total confer stands within 50 miles of Bath is approximately 176,000 acres of which 60,000 acres are in Pennsylvania. The study was conducted to determine the feasibility of locating a particleboard manufacturing firm in the Southern Tier.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Cornell Univ. Remote Sensing Program; 3 p
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  • 64
    Publication Date: 2011-08-18
    Description: Manual photointerpretation techniques were used to analyze images acquired by high altitude aircraft, the Skylab multispectral and Earth terrain camera (ETC), the LANDSAT multispectral scanner, and the LANDSAT-3 return beam vidicon camera. A color-additive viewer, and digital image analysis were also used on the LANDSAT MSS imagery. The value of each type of remotely sensed data was judged by the ease and accuracy of clearcut identification, and by the amount of detail discernible, especially regarding revegetation. Results of a site study in the Allegheny National Forest, Pennsylvania indicate that high altitude aerial photography, especially color infrared photography acquired during the growing season, is well suited for identifying clearcuts and assessing revegetation. Although photographs acquired with Skylab's ETC also yielded good results, only incomplete inventories of clearcuts could be made using LANDSAT imagery. Results for the Adirondack region of New York State were similar for the aircraft and satellite photography, but even less satisfactory for the LANDSAT imagery.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Cornell Univ. Remote Sensing Program; 157 p
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  • 65
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    Publication Date: 2011-08-18
    Description: The evolution of the national launch vehicle stable is presented along with lists of launch vehicles used in NASA programs. A partial list of spacecraft used throughout the world is also given. Scientific spacecraft costs are presented along with an historial overview of project development and funding in NASA.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Beyond the Atmosphere: Early Years of Space Sci.; p 133-170
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  • 66
    Publication Date: 2011-08-18
    Description: A 3.0 MHz Pulsed Doppler velocity meter (PD) was used to determine blood velocities in the ascending aorta from the suprasternal notch before, during and after progressive 5 min stages of lower body negative pressure (LBNP) in 7 subjects. Changes in stroke volume were calculated from the systolic velocity integrals. A unique 20 MHz PD was used to estimate bloodflow in the posterior tibial artery. With -20 torr mean stroke volume fell 11% and then continued to decline by 48% before LBNP was terminated. Mean tibial flow fell progressively with LBNP stress, due to an increase in reverse flow component and a reduction in peak forward flow and diameter. Stroke volume increased and heart rate fell dramatically during the first 15 sec of recovery. The LBNP was terminated early in 2 subjects because of vasovagal symptons (V). During V the stroke volume rose 86% which more than compensated for the drop in heart rate. This implies that V is accompanied by a paradoxical increase in venous return and that the reduction in HR is the primary cardiovascular event. During the first 15 sec of recovery these 2 subjects had a distinctive marked rise to heart rate reminiscent of the Bainbridge reflex.
    Keywords: AEROSPACE MEDICINE
    Type: Spec. Physiol. Studies in Support of Manned Space Flight; p 92-104
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  • 67
    Publication Date: 2011-08-17
    Description: Rocket ozone soundings have been conducted in the stratosphere and lower mesosphere at high latitudes during winter. The collection of soundings show a high degree of variability when compared to ozone distributions measured during summer and at lower latitudes. The concurrently observed temperature and winds also show large variations which can be qualitatively related to the ozone profiles. Two most unusual ozone profiles were observed in January 1979 over Alaska during a stratospheric warming event. Both ozone profiles were consistent in showing the measured mixing ratios to be higher at 50 km than those measured at 40 km, a feature never reported before. This feature is related to the concurrently observed wind and temperature distributions and the NMC analyses of pressure height fields. The polar night ozone observations in the upper stratosphere and lower mesosphere suggest some temperature dependence, but transports seem to play an important role.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 7; Aug. 198
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  • 68
    Publication Date: 2011-08-17
    Description: Two years of Nimbus 4 backscattered ultraviolet data have been recalibrated and reprocessed. A Laplace transform inversion was applied to radiances at 2876 A and below for 560,000 individual scans for the period April 1970-May 1972. The behavior of ozone near 50 km as a function of time, latitude, and longitude is presented. The high-latitude 1-mbar ozone mixing ratio is maximum at the winter solstice, about 10 microgram/g and is minimum at the summer solstice, about 4 microgram/g. Below 30 deg latitude the ozone is fairly constant at 4 microgram/g. Ozone variability is large in winter and spring and small in summer and fall.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 85; Aug. 20
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  • 69
    Publication Date: 2011-08-17
    Description: The effects of head cooling on thermoregulation and associated plasma fluid and electrolyte shifts during rest and submaximal exercise in the heat are investigated. Thermoregulatory responses and plasma volume were measured in four male subjects fitted with liquid-cooled neoprene headgear during 60 min of rest, 60 min of ergometer exercise at 45% maximal oxygen uptake and 30 min of recovery in the supine position at 40.1 C and 40% relative humidity. It is found that, compared to control responses, head cooling decreased thigh sweating and increased mean skin temperature at rest and attenuated increases in thigh sweating, heart rate, rectal temperature and ventilation during exercise. During recovery, cooling is observed to facilitate decreases in sweat rate, heart rate, rectal temperature and forearm blood flow and enhance the increase in average temperature. Cooling had no effect on plasma protein, osmotic or electrolyte shifts, and decreased plasma volume losses. The findings indicate the effectiveness of moderate head cooling for the improvement of human performance during exercise in heat.
    Keywords: AEROSPACE MEDICINE
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  • 70
    Publication Date: 2011-08-17
    Description: Three measurements of ionospheric electric field were made during the 24-h ALADDIN rocket program at Wallops Island on June 29-30, 1974. The first of these used a double probe instrument, flown at 1500 Local Solar Time, and the second and third measurements were made by barium cloud releases at evening and morning twilight. These three electric field vectors have been compared with the predictions of a number of models of electric field due to the dynamo effects of various atmospheric tides, and also of a possible magnetospheric origin. On the assumption that the measurements were made at a location equatorward of the afternoon convergence and poleward of the morning divergence in the electric field patterns related to the Sq current system, Stening's (1973) model of the diurnal variation of the electric field induced by the (1, -2) tidal model at the time of the summer solstice correctly predicts the directions of the observed electric field. Forbes and Lindzen's (1976, 1977) model, incorporating the three major propagating tidal modes as well as the evanescent (1, -2) mode, also bears an acceptable relationship to the ALADDIN electric field directions. The ALADDIN E-field magnitudes are comparable with those obtained by ground-based observations from Millstone Hill and from Saint Santin but are about half of Stening's model values, and three times those of Forbes and Lindzen. Saint Santin E-field directions, at the same latitude but 75 deg difference in longitude, are distinctly different from ALADDIN, implying that longitudinal differences are significant.
    Keywords: GEOPHYSICS
    Type: Journal of Atmospheric and Terrestrial Physics; 42; June 198
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  • 71
    Publication Date: 2011-08-17
    Description: The various stages in carrying out a monocluster block unsupervised classification using Landsat MSS data are described. Procedures for carrying out these various stages were found to be far from well-established for the type of terrain being investigated, which is rugged and contains many small land cover units. Two particular difficulties were encountered: first, that of precise ground location of pixels; and, secondly, that of objectively evaluating the results. Ways in which these can be surmounted are suggested.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
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  • 72
    Publication Date: 2011-08-17
    Description: The use of an annular momentum control device (AMCD) is proposed for enhancing the modal damping of large space structures (LSS's) during fine pointing missions. Theoretical and experimental studies proved that an AMCD cannot destabilize the LSS and that the system is asymptotically stable under certain conditions.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Journal of Guidance and Control; 3; Sept
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  • 73
    Publication Date: 2011-08-17
    Description: Large, high-voltage space power systems are being proposed for future space missions. These systems must operate in the charged-particle environment of space, and interactions between this environment and the high-voltage surfaces are possible. Ground simulation testing has indicated that dielectric surfaces that usually surround biased conductors can influence these interactions. For positive voltages greater than 100 V, it has been found that the dielectrics contribute to discharges. Using these experimental results a large, high-voltage power system operating in geosynchronous orbit was analyzed with the NASCAP code. Results of this analysis indicated that very strong electric fields exist in these power systems. A technology investigation is required to understand the interactions and develop techniques to alleviate any impact on power system performance.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
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  • 74
    Publication Date: 2011-08-17
    Description: The first effects of a nearby (10 parsec) supernova on the earth's atmosphere will be caused by ultraviolet radiation dissociating molecular oxygen. The event will be of about one month's duration. Several months later nuclear gamma radiation may arrive, causing a decrease in atmospheric ozone. Cosmic radiation from the supernova remnant will not intercept the earth for at least 1000 years at which time ozone will be seriously depleted. Supernova ultraviolet radiation increases column ozone and atomic oxygen. Atmospheric thermal structure is modified with a large temperature increase in the mesosphere and lower thermosphere and a decrease at higher altitudes caused by enhanced heat loss due to atomic oxygen radiation and conduction.
    Keywords: GEOPHYSICS
    Type: Planetary and Space Science; 28; June 198
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  • 75
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    Publication Date: 2011-08-17
    Description: A study of a large number of temperature measurements in the middle atmosphere shows a much more complex thermal structure of this region than described in the U.S. Standard Atmosphere, 1976. The mesopause height which is generally assumed to be at 80 km varies between 70 and 100 km, often with two minima in temperature at about 70 and 100 km and a maximum between 80-85 km. By solving the energy balance equation and the equations of continuity, the physical significance of the observed thermal structure is discussed in terms of the energetics of the various regions of the middle atmosphere. It is show that the solar UV radiation plays a major role only in the energy budget of the stratosphere and the lower thermosphere. The energetics of the mesosphere is primarily influenced by the dissipation of eddy energy. The temperature in the region is a good indicator of the eddy diffusivity and can be used in deriving the eddy diffusion coefficient.
    Keywords: GEOPHYSICS
    Type: Planetary and Space Science; 28; June 198
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  • 76
    Publication Date: 2011-08-17
    Description: The paper presents a model for contrast reduction by atmospheric haze developed for the 'two-halves' field of the earth's surface and other geometries of the earth's surface albedo. The model is based on a simplified solution of the equation of radiative transfer in two dimensions, resulting in a method for calculation of the upward zenith intensity in the atmosphere as a function of the distance from the border between the two half planes, for an unabsorbing atmosphere. The adjacency effect between two infinitesimal areas of different albedos is calculated; the resultant simplified solution is used to develop expressions for the line-spread function of the atmosphere and the modulation transfer function. The line-spread function is used to calculate the point spread function, which can be used to compute the intensity above any surface with given spatial dependence of the reflectivity.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 85; July 20
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  • 77
    Publication Date: 2011-08-17
    Description: Measurement of short-lived photochemically-produced species in the stratosphere by solar occultation is difficult because the rapid variation of such species near the terminator introduces ambiguities in interpreting the measured absorption in terms of meaningful atmospheric abundances. These variations produce tangent path concentrations that are asymmetric relative to the tangent point, as opposed to the symmetrical distribution usually assumed in most inversion algorithms. Neglect of this asymmetry may yield an inverted profile that deviates significantly from the true sunset/sunrise profile. In the present paper, the influence of this effect on solar occultation measurements of ClO and NO is examined. The results show that average inhomogeneity factors, which measure the concentration variation along the tangent path and which can be calculated from a photochemical model, can indicate which species require more careful data analysis.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 7; Apr. 198
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  • 78
    Publication Date: 2011-08-17
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Environmental Quality; 9; Jan
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  • 79
    Publication Date: 2011-08-17
    Description: Existing two-stream approximations to radiative transfer theory for particulate media are shown to be represented by identical forms of coupled differential equations if the intensity is replaced by integrals of the intensity over hemispheres. One set of solutions thus suffices for all methods and provides convenient analytical comparisons. The equations also suggest modifications of the standard techniques so as to duplicate exact solutions for thin atmospheres and thus permit accurate determinations of the effects of typical aerosol layers. Numerical results for the plane albedos of plane-parallel atmospheres are given for conventional and modified Eddington approximations, conventional and modified two-point quadrature schemes, the hemispheric-constant method and the delta-function method, all for comparison with accurate discrete-ordinate solutions. A new two-stream approximation is introduced that reduces to the modified Eddington approximation in the limit of isotropic phase functions and to the exact solution in the limit of extreme anisotropic scattering. Comparisons of plane albedos and transmittances show the new method to be generally superior over a wide range of atmospheric conditions (including cloud and aerosol layers), especially in the case of nonconservative scattering.
    Keywords: GEOPHYSICS
    Type: Journal of the Atmospheric Sciences; 37; Mar. 198
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  • 80
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    Publication Date: 2011-08-17
    Description: The Cosmic Background Explorer (COBE) satellite, planned for launch in 1985, will measure the diffuse infrared and microwave radiation of the universe over the entire wavelength range from a few microns to 1.3 cm. It will include three instruments: a set of microwave isotropy radiometers at 23, 31, 53, and 90 GHz, an interferometer spectrometer from 1 to 100/cm, and a filter photometer from 1 to 300 microns. The COBE satellite is designed to reach the sensitivity limits set by foreground sources such as the interstellar and interplanetary dust, starlight, and galactic synchrotron radiation, so that a diffuse residual radiation may be interpreted unambiguously as extragalactic
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
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  • 81
    Publication Date: 2011-08-17
    Description: With a three-parameter analytical model, the ozone profile below 10 mbar to the surface is derived from the Nimbus 4 satellite backscattered ultraviolet and infrared measurements. Comparison of the derived profiles with those observed by ozonesondes shows that gross features are satisfactorily reproduced. Meridional cross section of the ozone partial pressure derived from the satellite data reveal the significant equator-to-pole features, as well as seasonal variability. An examination of the sensitivity of the method shows that an error in infrared radiance of approximately 1 erg leads to an error of about 10 mbar in the weighted mean pressure of the ozone layer in the tropics.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 85; Mar. 20
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  • 82
    Publication Date: 2011-08-17
    Description: The role of local particle injections and accelerations in determining energetic particle spectra used as an indication of the radial diffusion of trapped magnetospheric particles is assessed. An idealized one-dimensional steady-state model of magnetospheric radial transport in which diffusion is balanced against particle sources and sinks is used to illustrate the effects of particle injection at a point and over a band of radii in which the observation point is immersed in particle spectra. For an injection spectrum uniformly distributed in space and a step function in energy, it is shown that the energy dependence of the measured spectrum is determined not only by adiabatic energization of the input spectrum but by the spatial structure of the injection and the radial dependence of the diffusion coefficient as well. The relevance of the results for observations of particle spectra in the terrestrial and Jovian magnetospheres is also considered
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 85; Feb. 1
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  • 83
    Publication Date: 2011-08-17
    Description: Since 1960 three classes of zone sounders have been developed: (1) backscatter ultraviolet, (2) infrared limb and nadir radiance, and (3) stellar and solar occultation methods. With these techniques ozone has been measured from 20 to 100 km. Tropospheric ozone measurements are beyond present technology, but total ozone is determined with the backscatter ultraviolet and nadir infrared methods.
    Keywords: GEOPHYSICS
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  • 84
    Publication Date: 2011-08-17
    Description: This paper describes the overall Large Area Crop Inventory Experiment technical approach utilizing the global weather-reporting network and the Landsat satellite to make a quasi-operational application of existing research results, and the accomplishments of this cooperative experiment in utilizing the weather information. Global weather data were utilized in preparing timely yield estimates for selected areas of the U.S. Great Plains, the U.S.S.R. and Canada. Additionally, wheat yield models were developed and pilot tested for Brazil, Australia, India and Argentina. The results of the work show that heading dates for wheat in North America can be predicted with an average absolute error of about 5 days for winter wheat and 4 days for spring wheat. Independent tests of wheat yield models over a 10-year period for the U.S. Great Plains produced a root-mean-square error of 1.12 quintals per hectare (q/ha) while similar tests in the U.S.S.R. produced an error of 1.31 q/ha. Research designed to improve the initial capability is described as is the rationale for further evolution of a capability to monitor global climate and assess its impact on world food supplies.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Applied Meteorology; 19; Jan. 198
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  • 85
    Publication Date: 2011-08-18
    Description: (Previously announced in STAR as N80-19588)
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing of Environment; 10; Dec. 198
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  • 86
    Publication Date: 2011-08-18
    Description: (Previously announced in STAR as N79-33530)
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing of Environment; 10; Nov. 198
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  • 87
    Publication Date: 2011-08-18
    Description: The development of agricultural remote sensing systems requires knowledge of agricultural field size distributions so that the sensors, sampling frames, image interpretation schemes, registration systems, and classification systems can be properly designed. Malila et al. (1976) studied the field size distribution for wheat and all other crops in two Kansas LACIE (Large Area Crop Inventory Experiment) intensive test sites using ground observations of the crops and measurements of their field areas based on current year rectified aerial photomaps. The field area and size distributions reported in the present investigation are derived from a representative subset of a stratified random sample of LACIE sample segments. In contrast to previous work, the obtained results indicate that most field-size distributions are not log-normally distributed. The most common field size observed in this study was 10 acres for most crops studied.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing of Environment; 10; Nov. 198
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  • 88
    Publication Date: 2011-08-18
    Description: Using stepwise discriminant analysis on spectral reflectance and spectral emissivity data collected by a Multispectral Scanner and Data System, mounted in an NC-130B aircraft and flown at an altitude of approximately 3 km, spectral bands were ranked as to their usefulness in separating specific rock types and rock alteration products in seven geologically diverse Utah sites. The optimum band for rock discrimination included the 1.18 to 1.30 micron interval, and the optimum combination of bands comprised the 1.18 to 1.30, 4.50 to 4.75, 0.46 to 0.50, 1.52 to 1.73, and 2.10 to 2.36 micron intervals. It is concluded that the spectral interval combination was more successful in differentiating geologic materials than either simulated Multispectral Scanner bands or simulated Thematic Mapper bands.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Photogrammetric Engineering and Remote Sensing; 46; Sept
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  • 89
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    Publication Date: 2011-08-18
    Description: Six male subjects were exposed to -50 torr lower body negative pressure (LBNP) for 10 min while stroke volume was recorded beat by beat at regular intervals before, during and after release of LBNP. Stroke volume was calculated from the systolic velocity integral in the ascending aorta by pulsed Doppler echocardiography (PDE) and the cross sectional area of the vessel by M mode echocardiography. Changes in leg volume were recorded continuously and blood pressure was taken every minute. Stroke volume dropped by 51% of the control in the first 33 sec of LBNP and continued to decline slowly to -62% toward the end. Heart rate increased by 15% in the first 10 sec and was 22% above control at the end of exposure. The resulting cardiac output closely followed the course of stroke volume (-47% at 33 sec, -53% at 8 min) showing that the modest increase in heart rate did little to offset the drop in stroke volume. Leg volume increased markedly within the first 10 sec with a more gradual rise reaching +3.5% at the end. Upon sudden release of LBNP, leg volume dropped significantly during the first 3 sec simultaneously with an increase in stroke volume followed by a substantial decline in heart rate below the baseline.
    Keywords: AEROSPACE MEDICINE
    Type: Spec. Physiol. Studies in Support of Manned Space Flight; p 80-91
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  • 90
    Publication Date: 2011-08-17
    Description: A study of nitrous oxide formation mechanisms indicates that N2O concentrations greater than 10 to the 9th per cu cm could be produced in IBC III aurora or by lower-level activity lasting for many hours, and, in favorable conditions, the N2O concentration could exceed the local nitric oxide density. An upper limit on the globally averaged N2O production rate from auroral activity is estimated at 2 x 10 to the 27th per second.
    Keywords: GEOPHYSICS
    Type: Nature; 287; Oct. 9
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  • 91
    Publication Date: 2011-08-17
    Description: Visible and near-infrared field spectral reflectance measurements of plutonic rocks were acquired in the 0.45- to 2.45-micron region with a portable field reflectance spectrometer. These spectra were used to determine spectral signatures for the various rock types and to evaluate the separability of these rocks based on their spectral characteristics. A total of 135 samples were divided into 11 groups based on their mineralogy. These 11 groups approximately correspond to traditional rock classifications and include five granitic groups, three gabbroic groups, and three ultramafic groups. The positions, intensity, and presence of iron, CO3(-2), and Al-OH and Mg-OH absorption bands varied among the 11 groups. Each rock group also had a range of albedos characteristic of the group. Stepwise linear discriminant analysis was performed on the spectral data to determine the separability of the 11 groups. Classification accuracy for 30 equally spaced wavelength bands between 0.45 and 2.45 microns was 78% with 10% serious misclassifications. The same analysis was repeated, limiting the spectral data to the wavelength regions corresponding to the proposed Landsat D thematic mapper scanner.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Geophysical Research; 85; May 10
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  • 92
    Publication Date: 2011-08-17
    Description: The paper deals with a statistical analysis of the errors associated with a minimum variance analysis of directional discontinuities by use of an idealized model of these discontinuities and various simulations, and also by an examination of actual Mariner 10 interplanetary magnetic field data. An empirical expression is derived for the magnitude of the error in an estimated discontinuity normal component, relative to the total field across the directional discontinuity. The analysis was performed primarily to aid in differentiating between interplanetary tangential and rotational discontinuities observed by Mariner 10.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 85; Sept. 1
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  • 93
    Publication Date: 2011-08-17
    Description: The development of surface and atmospheric levels of paleoatmospheric ozone is calculated by means of a detailed photochemical model and used to determine the levels of ultraviolet flux to the surface and the surface and atmospheric temperatures of the primitive earth. The model takes into account the chemistry of oxygen, nitrogen and hydrogen species and the effects of vertical transport in an atmosphere originally composed of as much N2, H2O and CO2 as the present atmosphere to which O2 is added to calculate the vertical profiles of O3 and nitrogen oxides as a function of O2 content. Calculations show that as oxygen content increases from 0.0001 to 1 times its present value, the height of the ozone peak moves from 5 to 25 km, and that maximum ozone densities are achieved for an O2 level of 0.1 times the present. Calculations of solar UV absorption by atmospheric species indicate the presence of a UV window between 200 and 220 nm that closed only when O2 reached 0.01 times its present level. Finally, calculations made using a radiative-convective model reveal that O3 levels corresponding to an O2 level of 0.1 times the present result in a globally averaged surface temperature increase of about 4.5 K for the present solar constant.
    Keywords: GEOPHYSICS
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  • 94
    Publication Date: 2011-08-17
    Description: Nonlinear least squares spectral curve fitting has been used to derive vertical mixing ratio profiles for NO2 and H2O above 16 km from high resolution (0.2/cm) solar spectra collected during sunset with a balloon borne interferometer. The NO2 profile shows a sharp peak of 8 ppbv at 32 km falling rapidly to less than 0.5 ppbv at 17 km. The H2O profile shows a broad peak of 6.5 ppmv at 30 km falling to less than 4 ppmv at 17 km.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 7; July 198
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  • 95
    Publication Date: 2011-08-17
    Description: Effective radiant temperatures (ERTs) of five wheat canopies in different stages of development were measured during morning and noon periods. The observed variability in nadir sensor response was quantitatively described as a function of canopy structure and the vertical temperature profile of canopy components. In many cases, the nadir sensor ERT was a poor measure of vegetation temperature due to effects of soil emissions. Strong vertical temperature profiles of vegetation components were also observed. The theory and measurements presented document that remote measurements of vegetation canopy temperatures cannot be made indiscriminately over large spatial regions without consideration of the underlying physical principles.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Applied Optics; 19; July 1
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  • 96
    Publication Date: 2011-08-17
    Description: Red and photographic infrared spectral data of alfalfa were collected at the time of the third and fourth cuttings using a hand-held radiometer for the earlier alfalfa cutting. Significant linear and non-linear correlation coefficients were found between the spectral variables and plant height, biomass, forage water content, and estimated canopy cover. For the alfalfa of the later cutting, which had experienced a period of severe drought stress which limited growth, the spectral variables were found to be highly correlated with the estimated drought scores.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: International Journal of Remote Sensing; 1; Jan
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  • 97
    Publication Date: 2011-08-17
    Description: Simultaneous microwave radar and spectral radiometric data were collected over Lake Erie during March 1978. A theoretical development is presented which interprets the data collected at nadir in terms of changes in the ice thickness and the electromagnetic attenuation coefficient. The theory also addresses the failure of the spectral radiometer to determine ice thickness through observations of quarter wavelength excursions in the reflectivity. Radar data collected off-nadir showed a substantially different behavior compared to that collected near nadir. This difference is attributed to a change in propagation characteristics from quasi-specular return from the ice-water interface to scattering from the rough air-ice interface.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Geophysical Research Letters; 7; Apr. 198
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  • 98
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    Publication Date: 2011-08-17
    Description: The microwave approaches for remote sensing of soil moisture centent, snowpack properties, surface water area, and the detection of precipitation over land are discussed. Both active (radar) and passive (radiometry) approaches are considered, and the advantages of microwave sensing are pointed out, including all-weather capability, especially at the longer wavelengths, and greater penetration depth with optical or infrared sensors. Results obtained from ground-based, aircraft, and spacecraft platforms show that microwave systems can monitor the moisture content in the surface soil layer (5 cm thick), and that passive microwave systems can discriminate between light and heavy snowcover, detect the presence of liquid water in the snow, and qualitatively estimate snow water equivalent.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Photogrammetric Engineering and Remote Sensing; 46; Apr. 198
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  • 99
    Publication Date: 2011-08-17
    Description: A two-dimensional model is used to predict the 1990 reduction in ozone due to the chlorine compounds formed by chlorofluoromethane (CFM) photolysis when the CFM release rate is held constant at the 1975 value. The predicted globally averaged ozone reduction of 3.5% is similar to that predicted by one-dimensional models that did not include chlorine nitrate chemistry, and used lower values for the reactions rates of NO + HO2 yielding NO2 + OH and O3 + HO2 yielding OH + 2O2. When the 5.7 ppbv increase in chlorine compounds predicted by one-dimensional models to occur under steady-state conditions is simulated by the two-dimensional model, a 26% decrease in atmospheric ozone is predicted. The latitude dependence of the ozone reduction is discussed in terms of the relevant photochemical reaction and transport. The chemical reactions that most strongly influence the meridional dependence of the ozone depletion are identified as those associated with the reactions of chlorine monoxide and atomic oxygen, the recombination of ozone and atomic oxygen, and the photodissociation of molecular oxygen.
    Keywords: GEOPHYSICS
    Type: Journal of the Atmospheric Sciences; 37; Mar. 198
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  • 100
    Publication Date: 2011-08-17
    Description: Comparison of photochemical calculations of atmospheric ozone between 40 and 55 km with measurements from a satellite-borne remote sensor shows agreement in the high-latitude summer hemisphere. However, in the sunlit high-latitude winter, the available data imply either a smaller water vapor mixing ratio than generally accepted or a temperature 15 - 20 K colder than contained in published model atmospheres. As with the ozone data the infrared emission in winter implies an odd oxygen loss rate smaller than predicted on the basis of standard water vapor and temperature models. The magnitude of the 1.27 micron signals and their consistency with upper stratospheric ozone data cast doubt on the large mesospheric ozone abundances deduced in independent experiments.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 85; Mar. 20
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