Möchten Sie über diese Zeitschrift informiert bleiben? Klicken Sie bitte auf die Buttons, um unsere Alerts zu abonnieren.
Möchten Sie über diese Zeitschrift informiert bleiben? Klicken Sie bitte auf die Buttons, um unsere Alerts zu abonnieren.
LONG-RANGE SURVEILLANCE RADARS AS INDICATORS OF BIRD NUMBERS ALOFT
in Israel Journal of Ecology and EvolutionSearch for other papers by LUIT S. BUURMA in
Current site
Google Scholar
Radars filter and select bird echoes within their beam in several ways. Longrange surveillance radars miss many birds behind the radar horizon. Moreover, the spatial behavior of the birds varies, thus further reducing detectability. Disentangling these effects requires empirical knowledge of the radar and general insight into the bird movements. A rough classification of bird echoes on the basis of direction, speed, and echo-type is necessary to quantify the total broad-front migration cohort by cohort. The extremely flat Dutch countryside and an ideal stacked beam S-band radar equipped with a sophisticated bird extraction system provided the database for the calculation of proportions of birds missed under typical migratory conditions. This improved the use of radar as an indicator of flight safety risk as well as a research tool for unravelling navigational strategies of migrants in the North Sea area. The key issue appears to be the selection of altitude and track direction in relation to landscape, wind, and flight phase.
Kauf
Sofortzugang erwerben (PDF-Download und unbegrenzter Online-Zugang):
Institutszugang
Melden Sie sich mit Open Athens, Shibboleth oder Ihren institutionellen Anmeldedaten an.
Persönliche Anmeldung
Melden Sie sich mit Ihrem brill.com-Konto an
-
AnonymousPrimary radar—a continuing role in ATC (including Interavia surface radar catalogue) Interavia 1980 5 455 470
-
Bruderer B., Steuri T., Baumgartner M.Short-range high-precision surveillance of nocturnal migration and tracking of single targets Isr. J. Zool 1995 41 207 220
-
Buurma L.S.Patterns of high bird migration over the North Sea area in October Limosa 1987 60 63 74(in Dutch, English summary)
-
Buurma L.S.Thermal imaging, a new remote sensing technique for nocturnal wildlife studies. Proceedings Bird Strike Committee Europe 19, Madrid 1988 621 628
-
Buurma L.S., Bruderer B.The application of radar for bird strike prevention. Bird Strike Committee Europe, The Hague 1990 75
-
Buurma L.S., van Gasteren H.Migratory birds and obstacles along the coast of the Dutch province Zuid Holland. Province Zuid-Holland, The Hague, 117 pp. (in Dutch, English summary) 1989
-
Deelder C.L.On the autumn migration of the Scandinavian Chaffinch (Fringilla c.coelebs L.) Ardea 1949 37 1 88
-
Eastwood E.Radar ornithology Methuen London 1967
-
Edwards J., Houghton E.W.Radar echoing area polar diagrams of birds Nature 1959 184 1059
-
Liechti F., Paproth H., Bruderer B.Quantification of nocturnal bird migration: a comparison of three methods. Poster P492 Int. Ornithol. Congr. Summary in J. Ornithol. 135 (Sonderheft): 261 1994
-
Perdeck A.C.The standard direction of the Scandinavian Chaffinch during autumn migration throughout its area of passage Ardea 1970 58 142 170
-
Tengeler I.Calculation of the radar distance of the Medium Power Radar (MPR) for one single bird. TNO. Oegstgeest 1977
-
Zink G.Der Zug europäischer Singvögel, 1–4. Vogelwarte Radolfzell, Radolfzell 1973–85
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 275 | 31 | 5 |
| Gesamttextansichten | 16 | 0 | 0 |
| PDF-Downloads | 14 | 0 | 0 |
LONG-RANGE SURVEILLANCE RADARS AS INDICATORS OF BIRD NUMBERS ALOFT
in Israel Journal of Ecology and EvolutionSearch for other papers by LUIT S. BUURMA in
Current site
Google Scholar
PubMed
Radars filter and select bird echoes within their beam in several ways. Longrange surveillance radars miss many birds behind the radar horizon. Moreover, the spatial behavior of the birds varies, thus further reducing detectability. Disentangling these effects requires empirical knowledge of the radar and general insight into the bird movements. A rough classification of bird echoes on the basis of direction, speed, and echo-type is necessary to quantify the total broad-front migration cohort by cohort. The extremely flat Dutch countryside and an ideal stacked beam S-band radar equipped with a sophisticated bird extraction system provided the database for the calculation of proportions of birds missed under typical migratory conditions. This improved the use of radar as an indicator of flight safety risk as well as a research tool for unravelling navigational strategies of migrants in the North Sea area. The key issue appears to be the selection of altitude and track direction in relation to landscape, wind, and flight phase.
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 275 | 31 | 5 |
| Gesamttextansichten | 16 | 0 | 0 |
| PDF-Downloads | 14 | 0 | 0 |
