Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Kết hợp mô hình dựa trên quy trình và mô hình dựa trên bề mặt để mô phỏng sự không đồng nhất dưới lòng đất trong các tầng chứa nước núi lửa
Tóm tắt
Các mô hình thực tế về cấu trúc đá học rất quan trọng để dự đoán dòng chảy và vận chuyển qua các tầng chứa nước núi lửa không đồng nhất. Các mô hình hiện có về dòng chảy dung nham dựa trên các quá trình vật lý có khả năng mô phỏng thực tế hình học và đá học của dòng chảy, nhưng cường độ tính toán hạn chế khả năng áp dụng trong việc tạo ra toàn bộ tầng chứa nước. Các mô hình bề mặt nhanh đã được phát triển cho việc lập bản đồ nguy cơ, nhưng những mô hình này không tích hợp hình học 3D hoặc đá học rất quan trọng cho các ứng dụng thủy địa chất. Ở đây, chúng tôi phát triển một phương pháp mô hình hóa lai (HMM) dựa trên sự kết hợp giữa mô hình dựa trên quy trình (PBM) và mô hình dựa trên bề mặt. Các phương pháp được trình bày và so sánh với một dòng chảy đơn lẻ đã biết và với nhau trong một mô phỏng toàn bộ tầng chứa nước. Kết quả cho thấy rằng cả mô phỏng PBM và HMM đều tái tạo hợp lý hình học dòng chảy (độ dài, nhánh, độ dày) của vụ phun trào năm 1984 tại Mauna Loa ở Hawai’i. Các mô phỏng của một tầng chứa nước núi lửa được xây dựng từ 100 dòng chảy với PBM và HMM khá giống nhau về phân bố không gian và tổng tỷ lệ đá học (aa, chuyển tiếp, pahoehoe, tro), hình học dòng chảy và hình học tầng chứa nước. Do đó, phương pháp lai là một phương pháp hiệu quả để tạo ra các mô hình thực tế về cấu trúc tầng chứa nước núi lửa. Độ thực tế của mô hình và phương pháp tham số có thể được cải thiện khi có thêm dữ liệu hiện trường.
Từ khóa
#mô hình hóa lai #dòng chảy dung nham #tầng chứa nước núi lửa #đá học #mô phỏng hình học dòng chảyTài liệu tham khảo
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