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1

On the coupling of layer instabilities in the nighttime midlatitude ionosphere

Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 246 KB

english, 2006

2

Preliminary results from joint measurements of E-region field-aligned irregularities using the MU radar and the frequency-agile radar

Mamoru Yamamoto, Shoichiro Fukao, Roland T. Tsunoda, Kiyoshi Igarashi, Tadahiko Ogawa

Journal:

Journal of Atmospheric and Solar-Terrestrial Physics

Year:

1997

Language:

english

File:

PDF, 865 KB

english, 1997

3

A simple model to relate ionogram signatures to large-scale wave structure

Roland T. Tsunoda

Journal:

Geophysical Research Letters

Year:

2012

Language:

english

File:

PDF, 829 KB

english, 2012

4

Magnetic-field-aligned characteristics of plasma bubbles in the nighttime equatorial ionosphere

Roland T Tsunoda

Journal:

Journal of Atmospheric and Terrestrial Physics

Year:

1980

Language:

english

File:

PDF, 994 KB

english, 1980

5

Ionospheric distortion of HF signals

Basler, Roy P., Price, Gary H., Tsunoda, Roland T., Wong, Terrence L.

Journal:

Year:

1988

Language:

english

File:

PDF, 1.02 MB

english, 1988

6

First observations of large-scale wave structure and equatorial spread F using CERTO radio beacon on the C/NOFS satellite

Thampi, Smitha V., Yamamoto, Mamoru, Tsunoda, Roland T., Otsuka, Yuichi, Tsugawa, Takuya, Uemoto, Jyunpei, Ishii, Mamoru

Journal:

Geophysical Research Letters

Year:

2009

Language:

english

File:

PDF, 2.18 MB

english, 2009

7

Coupled electrodynamics in the nighttime midlatitude ionosphere

Tsunoda, Roland T., Cosgrove, Russell B.

Journal:

Geophysical Research Letters

Year:

2001

Language:

english

File:

PDF, 565 KB

english, 2001

8

East-west asymmetry in type-2 echoes and enhanced electron drift in the equatorial electrojet

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

2002

Language:

english

File:

PDF, 165 KB

english, 2002

9

Satellite traces: An ionogram signature for large-scale wave structure and a precursor for equatorial spread F

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

2008

Language:

english

File:

PDF, 225 KB

english, 2008

10

Multi-reflected echoes: Another ionogram signature of large-scale wave structure

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

2009

Language:

english

File:

PDF, 197 KB

english, 2009

11

On blanketing sporadic E and polarization effects near the equatorial electrojet

Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

2008

Language:

english

File:

PDF, 459 KB

english, 2008

12

First observations of quasi-periodic radar echoes from Stanford, California

Tsunoda, Roland T., Buonocore, John J., Saito, Akinori, Kishimoto, Takeshi, Fukao, Shoichiro, Yamamoto, Mamoru

Journal:

Geophysical Research Letters

Year:

1999

Language:

english

File:

PDF, 628 KB

english, 1999

13

Semidiurnal behavior of quasi-periodic echoes in the mid-latitude Es region observed with the Chung-Li VHF Radar

Pan, C. J., Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

1999

Language:

english

File:

PDF, 560 KB

english, 1999

14

On the nature of radar echoes below 95 km during counter streaming in the equatorial electrojet

Tsunoda, Roland T., Ecklund, Warner L.

Journal:

Geophysical Research Letters

Year:

1999

Language:

english

File:

PDF, 625 KB

english, 1999

15

Seek S310-25: Quasi-periodic echoes and polarization electric fields

Tsunoda, Roland T., Yamamoto, Mamoru, Mori, Hirotaka, Fukao, Shoichiro

Journal:

Geophysical Research Letters

Year:

2000

Language:

english

File:

PDF, 587 KB

english, 2000

16

Radar measurements of electric fields in the topside of the equatorial electrojet: First results

Tsunoda, Roland T., Ecklund, Warner L., Johnston, Paul E.

Journal:

Geophysical Research Letters

Year:

2000

Language:

english

File:

PDF, 441 KB

english, 2000

17

Polarization electric fields sustained by closed-current dynamo structures in midlatitude sporadic E

Cosgrove, Russell B., Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

2001

Language:

english

File:

PDF, 534 KB

english, 2001

18

On a summer maximum in the occurrence frequency of 150 km ( F 1 ) radar echoes over Pohnpei

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

2004

Language:

english

File:

PDF, 230 KB

english, 2004

19

Azimuth-dependent E s layer instability: A missing link found

Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

2004

Language:

english

File:

PDF, 989 KB

english, 2004

20

On the enigma of day-to-day variability in equatorial spread F

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

2005

Language:

english

File:

PDF, 184 KB

english, 2005

21

On the post-sunset rise of the equatorial F layer and superposed upwellings and bubbles

Tsunoda, Roland T., Ecklund, Warner L.

Journal:

Geophysical Research Letters

Year:

2007

Language:

english

File:

PDF, 203 KB

english, 2007

22

East-west and vertical spectral asymmetry associated with equatorial type I waves during strong electrojet conditions: 1. Pohnpei radar observations

Choudhary, R. K., St.-Maurice, J.-P., Ecklund, Warner L., Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 1.16 MB

english, 2006

23

Seeding of equatorial plasma bubbles with electric fields from an E s -layer instability

Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

2007

Language:

english

File:

PDF, 532 KB

english, 2007

24

On electrodynamical measurements in the polar ionosphere with a monostatic incoherent scatter radar

Tsunoda, Roland T., Stauning, Peter, Olesen, Jens K.

Journal:

Year:

2007

Language:

english

File:

PDF, 681 KB

english, 2007

25

On the visibility and zenithal confinement of 150 km ( F 1 ) radar echoes

Tsunoda, Roland T., Ecklund, Warner L.

Journal:

Geophysical Research Letters

Year:

2007

Language:

english

File:

PDF, 253 KB

english, 2007

26

On the sheet-like nature of 150 km ( F 1 ) radar echoes

Tsunoda, Roland T., Ecklund, Warner L.

Journal:

Geophysical Research Letters

Year:

2008

Language:

english

File:

PDF, 323 KB

english, 2008

27

On large-scale wave structure and equatorial spread F without a post-sunset rise of the F layer

Tsunoda, Roland T., Bubenik, David M., Thampi, Smitha V., Yamamoto, Mamoru

Journal:

Geophysical Research Letters

Year:

2010

Language:

english

File:

PDF, 289 KB

english, 2010

28

On seeding equatorial spread F during solstices

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

2010

Language:

english

File:

PDF, 199 KB

english, 2010

29

On seeding equatorial spread F : Circular gravity waves

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

2010

Language:

english

File:

PDF, 221 KB

english, 2010

30

Initial ionospheric observations made by the new Resolute incoherent scatter radar and comparison to solar wind IMF

Bahcivan, Hasan, Tsunoda, Roland, Nicolls, Michael, Heinselman, Craig

Journal:

Geophysical Research Letters

Year:

2010

Language:

english

File:

PDF, 1.14 MB

english, 2010

31

On equatorial spread F : Establishing a seeding hypothesis

Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

2010

Language:

english

File:

PDF, 763 KB

english, 2010

32

On seeding, large-scale wave structure, equatorial spread F , and scintillations over Vietnam

Tsunoda, Roland T., Yamamoto, Mamoru, Tsugawa, Takuya, Hoang, Thai Lan, Tulasi Ram, S., Thampi, Smitha V., Chau, Ha Duyen, Nagatsuma, Tsutomu

Journal:

Geophysical Research Letters

Year:

2011

Language:

english

File:

PDF, 879 KB

english, 2011

33

The bias on the Joule heating estimate: Small-scale variability versus resolved-scale model uncertainty and the correlation of electric field and conductance

Cosgrove, Russell, McCready, Mary, Tsunoda, Roland, Stromme, Anja

Journal:

Journal of Geophysical Research

Year:

2011

Language:

english

File:

PDF, 1.68 MB

english, 2011

34

On the origin of quasi-periodic radar backscatter from midlatitude sporadic E

Tsunoda, Roland T., Fukao, Shoichiro, Yamamoto, Mamoru

Journal:

Year:

1994

Language:

english

File:

PDF, 1.76 MB

english, 1994

35

Spatial structure of the E region field-aligned irregularities revealed by the MU radar

Yamamoto, Mamoru, Komoda, Norio, Fukao, Shoichiro, Tsunoda, Roland T., Ogawa, Tadahiko, Tsuda, Toshitaka

Journal:

Year:

1994

Language:

english

File:

PDF, 793 KB

english, 1994

36

Enhanced velocities and a shear in daytime E sq over Kwajalein and their relationship to 150 km echoes over the dip equator

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

1994

Language:

english

File:

PDF, 558 KB

english, 1994

37

First incoherent-scatter measurements of the equatorial E layer obtained with the ALTAIR radar

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

1995

Language:

english

File:

PDF, 447 KB

english, 1995

38

Radar evidence for a new low-frequency crossed-field plasma instability in the polar mesopause region: A case study

Tsunoda, Roland T., Olesen, Jens K., Stauning, Peter

Journal:

Geophysical Research Letters

Year:

1997

Language:

english

File:

PDF, 564 KB

english, 1997

39

Structures in sporadic- E observed with an impedance probe during the SEEK Campaign: Comparisons with neutral-wind and radar-echo observations

Yamamoto, Masayuki, Ono, Takayuki, Oya, Hiroshi, Tsunoda, Roland T., Larsen, Miguel F., Fukao, Shoichiro, Yamamoto, Mamoru

Journal:

Geophysical Research Letters

Year:

1998

Language:

english

File:

PDF, 540 KB

english, 1998

40

Quasi-periodic radar echoes from midlatitude sporadic E and role of the 5-day planetary wave

Tsunoda, Roland T., Yamamoto, Mamoru, Igarashi, Kiyoshi, Hocke, Klemens, Fukao, Shoichiro

Journal:

Geophysical Research Letters

Year:

1998

Language:

english

File:

PDF, 577 KB

english, 1998

41

The SEEK (Sporadic- E Experiment over Kyushu) Campaign

Fukao, Shoichiro, Yamamoto, Mamoru, Tsunoda, Roland T., Hayakawa, Hajime, Mukai, Toshifumi

Journal:

Geophysical Research Letters

Year:

1998

Language:

english

File:

PDF, 598 KB

english, 1998

42

First 24.5-MHz radar measurements of quasi-periodic backscatter from field-aligned irregularities in midlatitude sporadic E

Tsunoda, Roland T., Fukao, Shoichiro, Yamamoto, Mamoru, Hamasaki, Takashi

Journal:

Geophysical Research Letters

Year:

1998

Language:

english

File:

PDF, 605 KB

english, 1998

43

Comparison of E-region electric fields observed with a sounding rocket and a Doppler radar in the Seek Campaign

Yamamoto, Mamoru, Itsuki, Tetsuya, Kishimoto, Takeshi, Tsunoda, Roland T., Pfaff, Robert F., Fukao, Shoichiro

Journal:

Geophysical Research Letters

Year:

1998

Language:

english

File:

PDF, 567 KB

english, 1998

44

On polarized frontal structures, type-1 and quasi-periodic echoes in midlatitude sporadic E

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

1998

Language:

english

File:

PDF, 638 KB

english, 1998

45

On the spatial relationship of 1-meter equatorial spread-F irregularities and depletions in total electron content

Tsunoda, Roland T., Towle, David M.

Journal:

Geophysical Research Letters

Year:

1979

Language:

english

File:

PDF, 459 KB

english, 1979

46

Backscatter measurements of 11-cm equatorial spread-F irregularities

Tsunoda, Roland T.

Journal:

Geophysical Research Letters

Year:

1980

Language:

english

File:

PDF, 377 KB

english, 1980

47

On the spatial relationship of 1-m equatorial spread F irregularities and plasma bubbles

Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

1980

Language:

english

File:

PDF, 573 KB

english, 1980

48

Time evolution and dynamics of equatorial backscatter plumes 1. Growth phase

Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

1981

Language:

english

File:

PDF, 1.41 MB

english, 1981

49

On the generation and growth of equatorial backscatter plumes 1. Wave structure in the bottomside F layer

Tsunoda, Roland T., White, Barbara R.

Journal:

Journal of Geophysical Research

Year:

1981

Language:

english

File:

PDF, 933 KB

english, 1981

50

On the generation and growth of equatorial backscatter plumes: 2. Structuring of the west walls of upwellings

Tsunoda, Roland T.

Journal:

Journal of Geophysical Research

Year:

1983

Language:

english

File:

PDF, 689 KB

english, 1983

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