1. Preface

   • Walter Fernandez
   • Hans J. Haubold

   EditorialNotes Pages: iii - iii

2. Surficial geology of the Chicxulub impact crater, Yucatan, Mexico

   • Kevin O. Pope
   • Adriana C. Ocampo
   • Charles E. Duller

   OriginalPaper Pages: 93 - 104

3. Variation of the geomagnetic field in Costa Rica during the total solar eclipse of July 11, 1991

   • Jorge Brenes
   • German Leandro
   • Walter Fernández

   OriginalPaper Pages: 105 - 117

4. Changes in solar irradiance and atmospheric turbidity in Costa Rica during the total solar eclipse of July 11, 1991

   • Walter Fernández
   • Vilma Castro
   • Alejandro Sáenz

   OriginalPaper Pages: 119 - 132

5. Air temperature and wind changes in Costa Rica during the total solar eclipse of July 11, 1991

   • Walter FernÁndez
   • Vilma Castro
   • Hugo Hidalgo

   OriginalPaper Pages: 133 - 147

6. Modelling the proto-Jovian atmospheres by a simple analytical algorithm

   • John F. Doorish

   OriginalPaper Pages: 149 - 162

7. Observations and recommendations of the second un/esa workshop on basic space science

   OriginalPaper Pages: 163 - 170