Browsing Facultad de Ciencias de la Tierra y el Mar by Subject "TECTONICS"

Now showing items 1-6 of 6

    • Constraints on inner forearc deformation from balanced cross sections, Fila Costen˜ a thrust belt, Costa Rica 

      Sitchler, Jason C.; Fisher, Donald M.; Gardner, Thomas W.; Protti, Marino (American Geophysical Union, 2007-12-21)
      The Fila Costeña thrust belt in the forearc of Costa Rica is accommodating a significant portion of the convergence of the Cocos plate and Panama microplate. Geologic mapping of the thrust belt depicts a duplex with three ...

    • Constraints on upper mantle anisotropy surrounding the Cocos slab from SK(K)S splitting 

      Abt, David L.; Fischer, Karen M.; Abers, Geoffrey A.; González, Victor; Strauch, Wilfried; Protti, Marino (American Geophysical Union, 2010-06-24)
      SKS and SKKS splitting observations are used to constrain the pattern of mantle flow in the Central American subduction zone beneath Costa Rica and Nicaragua. After removing the effects of shallow wedge anisotropy on ...

    • Earthquake magnitude calculation without saturation from the scaling of peak ground displacement 

      Melgar, Diego; Crowell, Brendan; Geng, Jianghui; Allen, Richard; Bock, Yehuda; Riquelme, Sebastian; Hill, Emma; Protti, Marino; Ganas, Athanassios (Geophysical Research Letters, 2015-06-02)
      GPS instruments are noninertial and directly measure displacements with respect to a global reference frame, while inertial sensors are affected by systematic offsets—primarily tilting—that adversely impact integration to ...

    • Nicoya earthquake rupture anticipated by geodetic measurement of the locked plate interface 

      Protti, Marino; González, Victor; Newman, Andrew; Dixon, Timothy H.; Schwartz, Susan; Marshall, Jeffrey S; Feng, Lujia; Walter, Jacob; Malservisi, Rocco; Owen, Susan E. (Nature Research, 2013-12-22)
      The Nicoya Peninsula in Costa Rica is one of the few places on Earth where the seismically active plate interface of a subduction zone is directly overlaid by land rather than ocean. At this plate interface, large megathrust ...

    • Seafloor structural observations, Costa Rica accretionary prism 

      McAdoo, Brian G.; Orange, Daniel L.; Silver, Eli; McIntosh, Kirk; Abbott, Lon; Galewsky, Joseph; Kahn, Leslie; Protti, Marino (1996-04-15)
      By studying seafloor morphology we can make associations between near surface defornation, fluid flow and the overakk structural framework of accretionary prisms. In February, 1994 a DS/RV ALVIN program to the Costa Rica ...

    • The March 25, 1990 (Mw=7.0 Ml=6.8) earthquake at the entrance of the Nicoya Gulf, Costa Rica: its prior activity, foreshocks, aftershocks and triggered seismicity 

      Protti, Marino; McNally, Karen; Pacheco, Javier; González, Victor; Montero, Carlos; Segura, Juan; Brenes, Jorge; Barboza, Vilma; Malavassi, Eduardo; Güendel, Federico; Simila, Gerald; Rojas, Daniel; Velasco, Aaron; Mata, Antonio; Schillinger, Walter (1995-10-10)
      On March 25, 1990 a large earthquake( Mw=7.0, ML=6.8) occurreda t the entranceo f the Nicoya Gulf, CostaR ica, at 1322:55.6U TC, producingc onsiderabled amagei n centralC osta Rica andg eneratingm uchi nteresta boutw ...