A method for marine seismic surveying includes towing a seismic sensors in a plurality of streamers in the water, actuating a seismic energy source in the water at selected times and detecting seismic signals at the sensors resulting from the actuation of the source. The second substrate is disposed opposite to the first substrate. The flat wires are of sufficient thickness, width, and frequency to support the electrode against the compressive load of the fuel cell stack. From the proposed content categories, the user can simply select the category he or she feels is most appropriate and store the content resource under that category in the content database, or propose a new category. A contact layer is formed above the IGZO channel layer.