From an office in Vancouver, scientist Liz Westby has been helping Hawaiians keep up with news about their volcanic eruption. Westby works at the Cascades Volcano Observatory in Columbia Tech Center. But in this linked-in world, the geologist can be in the center of the action as part of the social media team. Some of that has involved answering questions this week on the Hawaiian Volcano Observatory’s Facebook page. “We’re providing information to people who need it,” Westby said Monday as she monitored several screens with U.S.