Artichoke Provencale

Name: Artichoke Provencale
Ingredients: 1/8 cup olive oil, plus 1/8 cup; 2 tablespoons chopped garlic; 2 tablespoons chopped shallots; 4 ounces bay scallops; 4 ounces rock shrimp; 3 plum tomatoes, seeded and diced; 1/2 cup sliced mushrooms, button or cremini; 2 lemons, juiced; 3/4 cups fish stock or clam juice; 1/4 cup dry white wine; 2 tablespoons capers; 3 green onions, sliced (greens only); 2 ounces butter, room temperature; 2 ounces flour; 2 jumbo or extra-large artichokes, steamed, halved and choke removed