TM
Member Since 2024
Tshimangadzo Merline Matamba
Researcher, South African National Space Agency
AGU Research
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Absence of High Frequency Echoes From Ionosondes During the 23–25 April 2023 Geomagnetic Storm; What Happened?
JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS
24 march 2024
John Bosco Habarulema, Yongliang Zhang, Tshimangad...

We report an unusual event on absence of high frequency (HF) echoes in ionosonde observations from the ionospheric F2 region during the geomagnetic...

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Simultaneous Occurrence of Traveling Ionospheric Disturbances, Farley Buneman and Gradient Drift Instabilities Observed by the Zhongshan SuperDARN HF Radar
JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS
17 february 2024
Alicreance HIYADUTUJE, John Bosco Habarulema, Mich...

We show that Traveling Ionospheric Disturbances (TIDs) may affect the Farley Buneman Instability (FBI) and Gradient Drift Instability (GDI) echoes ...

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Ionospheric Response to the M‐ and X‐Class Solar Flares of 28 October 2021 Over the African Sector
SPACE WEATHER
17 august 2022
John Bosco Habarulema, Mpho Tshisaphungo, Zama T. ...

On the 28 October 2021, a total of thirteen solar flares occurred. Of these, there were two M‐ and one X‐class solar flares while the r...

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Development and Evaluation of Near‐Real Time TEC and Ancillary Products for SANSA Space Weather
SPACE WEATHER
17 may 2022
Tshimangadzo M. Matamba, Donald W. Danskin

In this paper, the second version of SANSA's Total Electron Content (TEC) maps is presented with its associated methodology and assumptions. The me...

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Ionospheric Response at Conjugate Locations During the 7–8 September 2017 Geomagnetic Storm Over the Europe‐African Longitude Sector
JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS
06 october 2020
John Bosco Habarulema, Zama T. Katamzi-Joseph, D B...

This paper focuses on unique aspects of the ionospheric response at conjugate locations over Europe and South Africa during the 7–8 September...

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Storm‐Time Modeling of the African Regional Ionospheric Total Electron Content Using Artificial Neural Networks
SPACE WEATHER
14 september 2020
Daniel I. Okoh, John Bosco Habarulema, Babatunde R...

This paper presents the development of a storm‐time total electron content (TEC) model over the African sector for the first time. The storm ...

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Assessing ionospheric response during some strong storms in solar cycle 24 using various data sources
JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS
19 january 2017
John Bosco Habarulema, Zama T. Katamzi-Joseph, Pat...

We present an analysis of a regional ionospheric response during six strong storms (−200 nT ≤Dst≤−100 nT) th...

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Midlatitude ionospheric changes to four great geomagnetic storms of solar cycle 23 in Southern and Northern Hemispheres
SPACE WEATHER
28 december 2016
Tshimangadzo M. Matamba, John Bosco Habarulema, D ...

This paper presents an investigation of ionospheric response to great (Dst ≤−350 nT) geomagnetic storms that occurred during solar...

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