Tốc độ tăng mức nước biển từ các phép đo cột thủy triều và hệ thống định vị toàn cầu vệ tinh dọc bờ biển Đại Tây Dương của Châu Phi

Arabian Journal of Geosciences - Tập 16 - Trang 1-16 - 2023
Alberto Boretti1
1Independent Scientist, Wellington, New Zealand

Tóm tắt

Nghiên cứu này nhằm mục đích khảo sát các cột đo thủy triều ở bờ tây châu Phi, từ Gibraltar đến Mũi Hảo Vọng. Tốc độ tăng tương đối (RoR) của mực nước biển được tính toán tại mỗi cột đo thủy triều đáp ứng các yêu cầu tối thiểu về chiều dài và chất lượng. Thông tin này được bổ sung bằng các phép đo của hệ thống định vị toàn cầu vệ tinh (GPS) về tình trạng lún của đất gần cột đo thủy triều để tính toán tốc độ lún. Trung bình, mực nước biển tương đối đang dâng lên dọc bờ tây châu Phi với tốc độ dưới +1 mm·năm−1, với một thành phần lún áp đảo, và gia tốc không đáng kể.

Từ khóa

#tăng mức nước biển #cột đo thủy triều #hệ thống định vị toàn cầu vệ tinh #bờ tây châu Phi #tốc độ lún

Tài liệu tham khảo

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