Geophysica 50:1

Articles: Jyh-Woei Lin, Ionospheric Anomaly Related to a Deep (>200km) Earthquake on 17 April 2012, M=6.8 Papua New Guinea Using Two-Dimensional Principal Component Analysis. A Case Study; Marcelin Bikoro-Bi-Alou, Theophile Ndougsa-Mbarga & Tabod Charles Tabod, Quantitative Interpretation of Magnetic Anomalies in Ebolowa-Djoum area (Southern Cameroon); Sergei A. Kitaigorodskii, On the fundamentals in the methods of wind wave forecasting; Toni Veikkolainen, Kimmo Korhonen & Lauri J. Pesonen, On the spatial averating of paleomagnetic data.