Further evidence for a 6-h tide above Arecibo

Yu Tong Morton, John David Mathews, Qihou Zhou

    Research output: Contribution to journalArticle

    33 Citations (Scopus)

    Abstract

    Since the publication of results suggesting the existence of a 6-h tide in the E region above Arecibo [(Tong et al., 1988) J. geophys. Res. 93, 10047-10051], much more data has been collected and analyzed. In particular, the time-height trajectories of middle and upper E region Tidal Ion Layers (TILs) for early January 1989 closely resemble those from early January 1981, which first revealed the presence of a 6-h quasi-periodic intermediate layer structure. Further, the January 1989 observations form an 'overture' to the March-May 1989 AIDA (Arecibo Initiative in Dynamics of the Atmosphere) campaign, which yielded a total of 28 days of additional data regarding TIL motion. Interestingly, the AIDA data set is dominated, above about 120 km altitude, by sporadic intermediate layers [(mathews et al., 1993) J. atmos. terr. Phys. 55, 447-457] and certainly does not show the consistent 6-h period TIL feature seen in the two January data sets. In reviewing all data collected over the past 10 yr and the extensive 1989 observations in particular, we conclude that the basic TIL structure is controlled by two separate tidal wind patterns. We refer to these as the normal pattern and the 'deep-winter' pattern. The normal pattern includes the combination of diurnal and semidiurnal tides, while the deep-winter pattern has an additional 6-h tidal component. The deep winter pattern remains unexplained, but we suggest that the 6-h periodicity, which appears to be phase locked with the semidiurnal tide, is generated via in situ non-linear frequency doubling of the semidiurnal tide. The January 1989 results also manifest a TIL structure, below 100 km altitude, which has not been previously reported.

    Original languageEnglish (US)
    Pages (from-to)459-465
    Number of pages7
    JournalJournal of Atmospheric and Terrestrial Physics
    Volume55
    Issue number3
    DOIs
    StatePublished - Jan 1 1993

    Fingerprint

    Tides
    tides
    tide
    E region
    Ions
    semidiurnal tide
    ion
    winter
    ions
    atmospheres
    atmosphere
    reviewing
    Trajectories
    periodicity
    periodic variations
    trajectory
    trajectories

    All Science Journal Classification (ASJC) codes

    • Environmental Science(all)
    • Engineering(all)
    • Geophysics
    • Atmospheric Science
    • Earth and Planetary Sciences(all)

    Cite this

    Morton, Yu Tong ; Mathews, John David ; Zhou, Qihou. / Further evidence for a 6-h tide above Arecibo. In: Journal of Atmospheric and Terrestrial Physics. 1993 ; Vol. 55, No. 3. pp. 459-465.
    @article{10716f37fcd441c4b236b52f9c859ccc,
    title = "Further evidence for a 6-h tide above Arecibo",
    abstract = "Since the publication of results suggesting the existence of a 6-h tide in the E region above Arecibo [(Tong et al., 1988) J. geophys. Res. 93, 10047-10051], much more data has been collected and analyzed. In particular, the time-height trajectories of middle and upper E region Tidal Ion Layers (TILs) for early January 1989 closely resemble those from early January 1981, which first revealed the presence of a 6-h quasi-periodic intermediate layer structure. Further, the January 1989 observations form an 'overture' to the March-May 1989 AIDA (Arecibo Initiative in Dynamics of the Atmosphere) campaign, which yielded a total of 28 days of additional data regarding TIL motion. Interestingly, the AIDA data set is dominated, above about 120 km altitude, by sporadic intermediate layers [(mathews et al., 1993) J. atmos. terr. Phys. 55, 447-457] and certainly does not show the consistent 6-h period TIL feature seen in the two January data sets. In reviewing all data collected over the past 10 yr and the extensive 1989 observations in particular, we conclude that the basic TIL structure is controlled by two separate tidal wind patterns. We refer to these as the normal pattern and the 'deep-winter' pattern. The normal pattern includes the combination of diurnal and semidiurnal tides, while the deep-winter pattern has an additional 6-h tidal component. The deep winter pattern remains unexplained, but we suggest that the 6-h periodicity, which appears to be phase locked with the semidiurnal tide, is generated via in situ non-linear frequency doubling of the semidiurnal tide. The January 1989 results also manifest a TIL structure, below 100 km altitude, which has not been previously reported.",
    author = "Morton, {Yu Tong} and Mathews, {John David} and Qihou Zhou",
    year = "1993",
    month = "1",
    day = "1",
    doi = "10.1016/0021-9169(93)90081-9",
    language = "English (US)",
    volume = "55",
    pages = "459--465",
    journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
    issn = "1364-6826",
    publisher = "Elsevier Limited",
    number = "3",

    }

    Further evidence for a 6-h tide above Arecibo. / Morton, Yu Tong; Mathews, John David; Zhou, Qihou.

    In: Journal of Atmospheric and Terrestrial Physics, Vol. 55, No. 3, 01.01.1993, p. 459-465.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Further evidence for a 6-h tide above Arecibo

    AU - Morton, Yu Tong

    AU - Mathews, John David

    AU - Zhou, Qihou

    PY - 1993/1/1

    Y1 - 1993/1/1

    N2 - Since the publication of results suggesting the existence of a 6-h tide in the E region above Arecibo [(Tong et al., 1988) J. geophys. Res. 93, 10047-10051], much more data has been collected and analyzed. In particular, the time-height trajectories of middle and upper E region Tidal Ion Layers (TILs) for early January 1989 closely resemble those from early January 1981, which first revealed the presence of a 6-h quasi-periodic intermediate layer structure. Further, the January 1989 observations form an 'overture' to the March-May 1989 AIDA (Arecibo Initiative in Dynamics of the Atmosphere) campaign, which yielded a total of 28 days of additional data regarding TIL motion. Interestingly, the AIDA data set is dominated, above about 120 km altitude, by sporadic intermediate layers [(mathews et al., 1993) J. atmos. terr. Phys. 55, 447-457] and certainly does not show the consistent 6-h period TIL feature seen in the two January data sets. In reviewing all data collected over the past 10 yr and the extensive 1989 observations in particular, we conclude that the basic TIL structure is controlled by two separate tidal wind patterns. We refer to these as the normal pattern and the 'deep-winter' pattern. The normal pattern includes the combination of diurnal and semidiurnal tides, while the deep-winter pattern has an additional 6-h tidal component. The deep winter pattern remains unexplained, but we suggest that the 6-h periodicity, which appears to be phase locked with the semidiurnal tide, is generated via in situ non-linear frequency doubling of the semidiurnal tide. The January 1989 results also manifest a TIL structure, below 100 km altitude, which has not been previously reported.

    AB - Since the publication of results suggesting the existence of a 6-h tide in the E region above Arecibo [(Tong et al., 1988) J. geophys. Res. 93, 10047-10051], much more data has been collected and analyzed. In particular, the time-height trajectories of middle and upper E region Tidal Ion Layers (TILs) for early January 1989 closely resemble those from early January 1981, which first revealed the presence of a 6-h quasi-periodic intermediate layer structure. Further, the January 1989 observations form an 'overture' to the March-May 1989 AIDA (Arecibo Initiative in Dynamics of the Atmosphere) campaign, which yielded a total of 28 days of additional data regarding TIL motion. Interestingly, the AIDA data set is dominated, above about 120 km altitude, by sporadic intermediate layers [(mathews et al., 1993) J. atmos. terr. Phys. 55, 447-457] and certainly does not show the consistent 6-h period TIL feature seen in the two January data sets. In reviewing all data collected over the past 10 yr and the extensive 1989 observations in particular, we conclude that the basic TIL structure is controlled by two separate tidal wind patterns. We refer to these as the normal pattern and the 'deep-winter' pattern. The normal pattern includes the combination of diurnal and semidiurnal tides, while the deep-winter pattern has an additional 6-h tidal component. The deep winter pattern remains unexplained, but we suggest that the 6-h periodicity, which appears to be phase locked with the semidiurnal tide, is generated via in situ non-linear frequency doubling of the semidiurnal tide. The January 1989 results also manifest a TIL structure, below 100 km altitude, which has not been previously reported.

    UR - http://www.scopus.com/inward/record.url?scp=38249004261&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=38249004261&partnerID=8YFLogxK

    U2 - 10.1016/0021-9169(93)90081-9

    DO - 10.1016/0021-9169(93)90081-9

    M3 - Article

    VL - 55

    SP - 459

    EP - 465

    JO - Journal of Atmospheric and Solar-Terrestrial Physics

    JF - Journal of Atmospheric and Solar-Terrestrial Physics

    SN - 1364-6826

    IS - 3

    ER -