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  • 1995-1999  (4)
  • Easter Island  (2)
  • drug policy  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Swath Bathymetry Processing of GLORI-B and SeaBeam 2000 (1997)
    Springer
    Marine geophysical researches 19 (1997), S. 407-419 
    Details
    ISSN: 1573-0581
    Keywords: GLORIA ; GLORI-B ; SeaBeam ; bathymetry processing ; Easter Island ; seamounts ; hotspot
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A new bathymetry processing software package has been developed to postprocess new GLORI-B swath bathymetry data using preexisting techniques. GLORI-B bathymetry is calculated using an interferometry (phase delay) method using the modified GLORIA towfish which has parallel rows of transducers on both sides. We describe four types of artifacts observed during the first use of this new system during Legs 5 and 6 of the Gloria Expedition which surveyed the fastest spreading segment of the global seafloor spreading system and the broad chain of volcanoes near Easter Island. These artifacts include cross-track bias, along-track bias, a 'dropped edge' effect, and random noise. We describe and illustrate how we minimize these artifacts. We merge the SeaBeam 2000 bathymetry data with the GLORI-B bathymetry data to produce a final bathymetric mosaic which covers about 243,400 km2 and shows a different style of diffuse widely spread volcanism not previously observed along hotspot chains. The data are used in several studies describing seamount morphology, elastic thickness of the lithosphere, tectonic and geochemical evolution of the area, and mantle flow from a hotspot to a superfast seafloor spreading center.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004246305121
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Side-Scan Processing of GLORI-B and SeaBeam 2000 (1997)
    Springer
    Marine geophysical researches 19 (1997), S. 397-405 
    Details
    ISSN: 1573-0581
    Keywords: GLORIA ; GLORI-B ; SeaBeam ; side-scan processing ; Easter Island ; seamounts ; hotspot
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A new side-scan processing software package has been developed to postprocess data from the new GLORI-B system and SeaBeam 2000 side-scan data using preexisting techniques. We describe the procedures used to process the side-scan data collected during Legs 5, 6 and 7 of the Gloria Expedition in the spring of 1993. The procedures included minimizing artifacts and merging the two types of side-scan data together. The final mosaic shows recent widespread volcanic flows over large areas of the seafloor, unlike any other volcanic chain surveyed on the seafloor. The side-scan data were also very useful in dredging young rocks which are described in recently submitted geochemical manuscripts. The unique style of widespread low-lying young volcanism is attributed to the combination of superfast seafloor spreading and an underlying hotspot channel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004238121051
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Uses and misuses of epidemiology in shaping and assessing drug policy (1997)
    Springer
    The journal of primary prevention 17 (1997), S. 375-382 
    Details
    ISSN: 1573-6547
    Keywords: drug use and abuse ; drug policy ; epidemiology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Seven ways that epidemiology can be used in the analysis of drug policy are identified, as follows: to determine the causes of drug use and abuse; to monitor the levels of drug use and abuse in our communities; to identify trends over time in drug use and abuse; to complete the clinical picture of drug use and abuse; to identify syndromes of abuse; to identify target groups or individuals for preventive interventions; and to determine the effectiveness of interventions for the prevention or treatment of drug abuse. Common misuses of epidemiology are also identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02252629
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Analyzing drug policy (1997)
    Springer
    The journal of primary prevention 17 (1997), S. 351-361 
    Details
    ISSN: 1573-6547
    Keywords: drug policy ; harm reduction ; addictions ; drug prevention ; social control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Drug policy advocates must move beyond simplistic concepts of supply reduction and demand reduction. A realistic drug policy must differentiate between drug use and abuse and must avoid contributing to the harm done by drug use. A harm reduction approach requires a more refined model representing the interactions of the complex system of variables which influences the outcomes of the drug experience. This paper examines some of the elements that should go into such a model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02252627
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    Paper (German National Licenses)
    Fulltext
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