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  • 1
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    North Pacific Ocean gyre primary production (PP) from 1984 based on 14C uptake (2003)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: Event label; Hawaii Ocean Time-Series; Hirota; HOT; JGOFS; Joint Global Ocean Flux Study; Latitude of event; Longitude of event; Primary production of carbon per area, daily
    Type: Dataset
    Format: text/tab-separated-values, 2 data points
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  • 2
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    North Pacific Ocean gyre primary production (PP) from 1968-74 based on 14C uptake (2003)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: CLIMAX; Event label; Hawaii Ocean Time-Series; HOT; JGOFS; Joint Global Ocean Flux Study; Latitude of event; Longitude of event; Primary production of carbon per area, daily
    Type: Dataset
    Format: text/tab-separated-values, 2 data points
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  • 3
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    North Pacific Ocean gyre primary production (PP) from 1968-82 based on 14C uptake (2003)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: Calculated average/mean values; CLIMAXsummer; CLIMAXwinter; Event label; Hawaii Ocean Time-Series; HOT; JGOFS; Joint Global Ocean Flux Study; Latitude of event; Longitude of event; Primary production of carbon per area, daily
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
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    DATA PANGAEA
  • 4
    Electronic Resource
    Electronic Resource
    Spatial and temporal feeding patterns of copepods from the North Pacific centra gyre (1980)
    Springer
    Marine biology 58 (1980), S. 295-309 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Spatial and temporal feeding patterns (determined from an index of gut fullness) are described for 10 typical species of calanoid copepods collected from the North Pacific central gyre (September 1968 to June 1977), an area where the zooplankton is food limited and there were a-priori reasons to suspect that feeding and competition for food were important in regulating zooplankton community structure. Over 100 samples from 11 cruises to the eastern part of the gyre were examined, and patterns of gut fullness were related to environmental variables and the copepod species structure. The copepods studied all tended to be omnivores and food generalists. Males had lower indices of gut fullness than females but both males and females of a species had similar spatial and temporal feeding patterns. Guts were usually fuller at night than during the day, even in nonmigrating species; however, within nighttime depth distributions, no depths were preferred for feeding. There were also differences between species in mean gut fullness, but different species tended to have similar spatial and temporal feeding patterns. There was considerable spatial variability, and locales could be identified in which most species had higher indices of gut fullness. The copepods were not necessarily more abundant in these locales, nor did these tend to be areas of above average chlorophyll concentration. These patterns were consistent with relatively nonselective feeding, and there was no evidence that these species separate their niches by feeding at differing places or times.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00390778
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Relation between surface chlorophyll, integrated chlorophyll and integrated primary production (1982)
    Springer
    Marine biology 69 (1982), S. 247-252 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The relationships between surface chlorophyll and integrated values of chlorophyll and primary production are examined in the California Current and the central North Pacific Ocean. In the California Current, surface chlorophyll is correlated with both integrated chlorophyll and integrated primary production, although there is considerable scatter in the relationships. In the central North Pacific, surface chlorophyll is not correlated with either integrated chlorophyll or integrated primary production. An analysis of closely spaced replicate casts shows that in both areas most of the scatter in the relations between surface values and integrated values is due to spatial or temporal changes in the relations themselves rather than measurement error. The use of surface chlorophyll or fluorescence values as indicators of the biological state of pelagic ecosystems should thus be applied with caution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397490
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  • 6
    Electronic Resource
    Electronic Resource
    Spectrocam-10 Thermal Infrared Observations Of The Dust In Comet C/1995 O1 Hale-Bopp (1997)
    Springer
    Earth, moon and planets 78 (1997), S. 265-270 
    Details
    ISSN: 1573-0794
    Keywords: Comets ; infrared ; silicate feature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract We describe 5 to 18 μm broadband images and R ∼ 100 spectra of comet Hale-Bopp taken with SpectroCam-10 on the 5 m Hale telescope during six runs between 1996 June and 1997 April. Our data show the gradual warming of dust grains as the comet approached perihelion. In June, the 10 μm silicate emission feature was already stronger than observed in any other comet, and it increased to about 3 times the continuum level near perihelion. Spectral structure attributed to a crystalline olivine grain component remained relatively constant, but other features associated with pyroxenes appeared to vary with heliocentric distance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006217503964
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  • 7
    Electronic Resource
    Electronic Resource
    Ground-based infrared observations of comet Halley (1987)
    [s.l.] : Nature Publishing Group
    Nature 326 (1987), S. 55-57 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We observed comet Halley from 13:00 to 17:OOUT on the morning of March 13 1986 using the 2.3-m telescope of the Wyoming Infrared Observatory (WIRO). Our detector was a single-channel Wyoming Ga:Ge bolometer3'4 with an a.c.-coupled preamplifier. All observations were made using a 7.5 Hz chopping ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/326055a0
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  • 8
    Electronic Resource
    Electronic Resource
    Mid-infrared imaging of ultracompact H II regions (1994)
    Springer
    Experimental astronomy 3 (1994), S. 159-160 
    Details
    ISSN: 1572-9508
    Keywords: H II regions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We discuss preliminary results of an 11.7 μm imaging survey of ultracompact H II regions from the Wood and Churchwell radio survey. We find that that the morphologies of ionized gas and warm dust are often significantly different, indicating that an H II region classification scheme should be based on more than radio data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00430147
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  • 9
    Electronic Resource
    Electronic Resource
    A high resolution mid-infrared image of the Starburst Galaxy M82 (1994)
    Springer
    Experimental astronomy 3 (1994), S. 169-170 
    Details
    ISSN: 1572-9508
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have produced high-resolution images of the nuclear region of M82 with SpectroCam-10, a mid-infrared instrument at the Palomar 5 m telescope. These images were taken at 11.7 μm and 9.8 μm with a 1μm filter bandpass at the diffraction limit of 0.6 arcsec, making them the highest resolution maps yet available of M82. In addition, we have obtained high-resolution (λ/Δλ=2000) maps of the velocity field of the nuclear disk of M82 in the 12.81 μm line emission of [NeII]. In these proceedings we present the 11.7 μm image, which will appear together with the 9.8 μm map and the [Ne II] spectra in a subsequent paper, now in preparation. This image shows very clearly a bridge structure joining the eastern and western clusters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00430152
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  • 10
    Electronic Resource
    Electronic Resource
    Thermal Emission From The Dust Coma Of Comet Hale-Bopp And The Composition Of The Silicate Grains (1997)
    Springer
    Earth, moon and planets 79 (1997), S. 247-264 
    Details
    ISSN: 1573-0794
    Keywords: Comet Hale-Bopp ; infrared ; dust ; silicates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The dust coma of comet Hale-Bopp was observed in the thermal infrared over a wide range in solar heating (R = 4.9–0.9 AU) and over the full wavelength range from 3 μm to 160 μm. Unusual early activity produced an extensive coma containing small warm refractory grains; already at 4.9 AU, the 10 μm silicate emission feature was strong and the color temperature was 30% above the equilibrium blackbody temperature. Near perihelion the high color temperature, strong silicate feature, and high albedo indicated a smaller mean grain size than in other comets. The 8–13 μm spectra revealed a silicate emission feature similar in shape to that seen in P/Halley and several new and long period comets. Detailed spectral structure in the feature was consistent over time and with different instruments; the main peaks occur at 9.3, 10.0 and 11.2 μm. These peaks can be identified with olivine and pyroxene minerals, linking the comet dust to the anhydrous chondritic aggregate interplanetary dust particles. Spectra at 16–40 μm taken with the ISO SWS displayed pronounced emission peaks due to Mg-rich crystalline olivine, consistent with the 11.2 μm peak.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006201820477
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