連續第三度上修,基準情境達 40,187 噸 — 成熟化訊號同步加速,捕撈窗口收窄
累計漁獲量達 39,108 噸,第 17 週週度漁獲 2,463 噸——連續第三週位於尾段延續門檻之上。綜合基準情境上修至 40,187 噸,為近四週第三度上修;當前累計已超越第 16 週之悲觀與基準情境。
第 17 週週度漁獲為 2,463 噸,較第 16 週回落 28.2%,但仍為五季均值同期週度漁獲 1,219 噸之逾兩倍——連續第三週位於尾段延續門檻之上。第 14 至第 17 週四週合計 12,420 噸,占本季累計漁獲量 31.8%,為 2021 至 2025 年五季校準面板中前所未見的末段相位貢獻比重。本季已確立清晰之兩段結構:令人失望之高峰窗口(第 7 至第 11 週週均 3,526 噸,對比面板均值 7,069 噸),其後接續校準紀錄中最長、最具韌性之峰後尾段。
四模型集成將基準情境上修至 40,187 噸——為連續第三度上修(自第 13 週谷底分別為 18.0%、7.9%、5.6%,累計 +34.5%)。悲觀情境維持 39,192 噸(20%),基準情境 40,187 噸(55%),樂觀情境 41,927 噸(25%);當前累計漁獲已完全超越第 16 週之悲觀與基準情境。惟上行空間視窗正結構性收窄:體型結構已推進至極端末段區間——600 公克以上佔比單週躍升 17.8 個百分點至 47.6%,已成主導等級——歷史經驗顯示,600 公克以上佔比一旦超過 55%,具捕撈意義之漁獲將於約一週內結束。第 18 週為關鍵判讀:超過 2,000 噸將使尾段延續至第四週並推升基準情境至 40,500 至 42,000 噸;低於 1,000 噸則為長期等待之衰退啟動。作業船數自第 7 週以來首度減少(78→77),為須密切關注之領先指標。
兩項偏空觸發(體型結構),兩項偏多觸發(CPUE 與尾段態勢);綜合機率 20 / 55 / 25。
拖曳下週漁獲;預測基準與態勢判讀將依本報告自身門檻同步更新。
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