IGS, an international group of scientists, proposes that a network of canals on Mars be dredged in preparation for irrigation and terraforming. Figure 12.18 shows a map of the network in question. You have been asked to consult with IGS on some practical matters.
(a) It is very expensive to move dredging equipment over land. Is it possible to plan the dredging so the equipment can be delivered from Earth to the base and be near or at the base at the end of dredging?
(b) Mars is windy and so there will need to be maintenance of the dredged canals until terraforming is well underway. Part of the IGS proposal suggests that there be observation stations built at every canal intersection; when terraforming is complete, these can be converted into water-flow-control stations. Is there a way to visit all of the observation stations in one trip?
