磁法探测木质沉船的应用实例

A case study of magnetic survey and evaluation of wooden wrecks

承载着能够复原人类文明进步史的古代木质沉船及其装载物是考古和历史学家关注的对象,考古意义和价值都十分重要,但主动探测寻找水下被掩埋的木质沉船类似于大海捞针,至今未见报道。笔者通过对某地木质沉船的探测和验证实例的介绍,不仅证实了高精度磁法技术可以胜任探测木质沉船的调查任务,而且通过对木船引起的磁异常解释,可以对木船的规模、平面投影位置等提供验证、发掘所需要的信息。实践证实了磁法勘察技术探测木质沉船的可行性、可靠性和有效性。

The ancient wooden wrecks and their stowage,which bear the history of human civilization and progress and have archaeological significance and value,have aroused much interest among archaeologists and historians,and their recovery is very important.Nevertheless,underwater active detection for buried wooden wrecks is similar to the search for a needle in a haystack,and hence no report has been seen up till now. Through a case study of wooden ship detection and validation,the authors confirmed that a high precision magnetic method is not only suitable for detecting a wooden wreck but also can verify the size and plane projection position of the wreck through the interpretation of magnetic anomaly caused by the wreck and thus excavate the valuable information. Practice shows that the magnetic prospecting technique can be used to detect the wooden wreck with reliability and effectiveness.